{"title":"Geotextile Thickness Gauge","description":"\u003ch2\u003e\u003cspan\u003eGeotextile Thickness Gauges\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eA geotextile thickness gauge measures the nominal thickness of geosynthetic materials under a specified pressure. Because compressible fabrics change thickness under load, every measurement must be reported alongside the applied pressure. ASTM D5199 specifies the method for determining the nominal thickness of geosynthetics, while ISO 9863 addresses thickness measurements at specified pressures, including a second part covering individual layers within multilayer products.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eQualitest offers six gauge configurations, ranging from manually operated lever instruments that require no electrical power to servo-driven platforms supporting seven test modes. Manufacturers use these instruments to verify production lots against published product data sheets, while laboratories rely on thickness measurements for permeability calculations and conformity assessments.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eApplications\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eGeotextile thickness testing supports quality control throughout geosynthetic manufacturing and construction acceptance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eGeotextile Manufacturing\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Checks woven and nonwoven geotextile rolls against the nominal thickness specified in product data sheets.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eGeomembrane and Liner Production\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Verifies that polymeric and bituminous barrier sheets maintain their specified thickness throughout extrusion and calendering processes.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eDrainage Geocomposite QC\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Records the deformation of compressible cores as applied pressure increases from 2 kPa to 200 kPa.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eLandfill and Containment Works\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Confirms that liner, cushioning, and cover materials meet project specifications before installation.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eContractor Incoming Inspection\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Checks delivered materials at storage yards or site laboratories before they are incorporated into construction projects.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003ePermeability Reporting\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Provides nominal thickness measurements used to convert permittivity results into a coefficient of permeability.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eConformity and Type Testing\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Generates individual-layer and overall thickness measurements required for certification documentation.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003eGeotextile Thickness Gauge Range\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eQualitest offers six models, covering applications from basic mechanical bench testing to automated platforms designed for multiple testing standards. Five models measure total material thickness, while the sixth is designed to measure individual layers within bonded composite products.\u003c\/span\u003e\u003c\/p\u003e\n\u003ctable class=\"table table-style-align-center\" align=\"center\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\" width=\"890\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eTest Scope\u003c\/th\u003e\n\u003cth\u003ePressure Stages\u003c\/th\u003e\n\u003cth\u003eResolution\u003c\/th\u003e\n\u003cth\u003eDescription\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eQualiGTX™ TG 40\u003c\/td\u003e\n\u003ctd\u003eGeotextiles and geomembranes\u003c\/td\u003e\n\u003ctd\u003e2, 20, 200 kPa\u003c\/td\u003e\n\u003ctd\u003e0.01 mm\u003c\/td\u003e\n\u003ctd\u003eLever gauge with a single 25 cm² presser foot, reading 0 to 12 mm. Needs no power connection and no load cell calibration, which keeps the calibration scope short. At 40 kg it suits laboratories running thickness as a routine confirmation check.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQualiGTX™ TG L\u003c\/td\u003e\n\u003ctd\u003eGeotextiles and geomembranes\u003c\/td\u003e\n\u003ctd\u003e2, 20, 200 kPa\u003c\/td\u003e\n\u003ctd\u003e0.01 mm\u003c\/td\u003e\n\u003ctd\u003eLever gauge supplied with four matched 25 cm² presser feet, so several specimens sit under load together at the 2 kPa stage instead of running one at a time. A low-profile 400 mm frame puts the dial at reading height.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQualiGTX™ TG GM\u003c\/td\u003e\n\u003ctd\u003eUniform polymeric and bituminous barriers\u003c\/td\u003e\n\u003ctd\u003eFixed 20 kPa\u003c\/td\u003e\n\u003ctd\u003e0.01 mm\u003c\/td\u003e\n\u003ctd\u003eSingle-purpose digital gauge for smooth barrier and waterproofing sheet, reading 0 to 10 mm. Fixed pressure means no weights to select, so results stay consistent between operators and the test cycle stays short.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQualiGTX™ TG D\u003c\/td\u003e\n\u003ctd\u003eGeotextiles, geomembranes, geonets, geocomposites\u003c\/td\u003e\n\u003ctd\u003e2 kPa ± 0.01 kPa\u003c\/td\u003e\n\u003ctd\u003e0.001 mm\u003c\/td\u003e\n\u003ctd\u003eStepper-driven closed-loop frame with Class 1 accuracy, reading 0 to 12 mm. A 10-inch LCD plots thickness against load as the test runs, so compression behavior is visible rather than reduced to one end value.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQualiGTX™ TG A\u003c\/td\u003e\n\u003ctd\u003eAll geosynthetics, seven test modes\u003c\/td\u003e\n\u003ctd\u003e2, 20, 200 kPa\u003c\/td\u003e\n\u003ctd\u003e0.001 mm\u003c\/td\u003e\n\u003ctd\u003eDual servo platform carrying 100 cm² and 25 cm² presser feet plus coaxial presser points for uneven thickness. Seven methods run without changing hardware, and results upload over the network. The broadest method coverage in the range.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQualiGTX™ TG ML\u003c\/td\u003e\n\u003ctd\u003eSingle layers inside bonded multilayer products\u003c\/td\u003e\n\u003ctd\u003eAt the pressure the method specifies\u003c\/td\u003e\n\u003ctd\u003e0.1 mm\u003c\/td\u003e\n\u003ctd\u003eStacking apparatus holding five specimens between four 1.0 mm separator plates, with platens that deflect no more than 0.1 mm under load. Reports layer thickness in geocomposites whose layers cannot be separated without damaging them.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\u003cspan\u003eHow to Choose the Right Geotextile Thickness Gauge\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eFor routine verification without an electrical power supply\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Select the TG 40, a straightforward three-stage lever-operated gauge.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eFor increased specimen throughput without automation\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Choose the TG L, featuring four matched presser feet that allow dwell periods to overlap.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eFor smooth liners and waterproofing sheets\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Select the TG GM, a fixed-pressure gauge that eliminates the need for operators to select measurement weights.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eFor thin membranes and coatings requiring greater measurement precision\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Choose the TG D or TG A. Both provide a resolution of 0.001 mm, compared with 0.01 mm on the other models.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eFor analyzing material compression under increasing loads\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Choose the TG D, which displays a live thickness-versus-load curve.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eFor laboratories performing tests under multiple methods\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Select the TG A, which supports seven test modes on a single frame without requiring presser-foot changes.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eFor measuring individual layers in bonded geocomposites\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Choose the TG ML, the only model in the range designed to measure thickness within multilayer products.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003eWhy Choose Qualitest for Your Geotextile Thickness Gauge\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eQualitest North America supplies testing and measurement equipment to manufacturers, laboratories, and quality control teams, supported by responsive technical assistance and calibration services. The Geotextile Thickness Gauge range is designed to deliver reliable measurements aligned with applicable testing standards, allowing customers to source their equipment from one trusted supplier.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOur team helps you identify the appropriate gauge configuration based on your sample materials, required testing standards, and specimen throughput. We also provide support from installation onward to help meet your testing and measurement requirements.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eRequest a Quote\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eShare details about the materials you test, the pressure levels specified in your testing procedures, and your typical specimen volume. Our team will recommend a suitable geotextile thickness gauge for your application.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003ca href=\"https:\/\/qualitest.us\/pages\/contact\"\u003eContact the Qualitest team\u003c\/a\u003e\u003ca href=\"https:\/\/www.worldoftest.com\/contact\/\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003cspan\u003e for pricing and lead-time information.\u003c\/span\u003e\u003c\/p\u003e","products":[{"product_id":"digital-geosynthetic-thickness-gauge","title":"Digital Geosynthetic Thickness Gauge","description":"\u003ch2\u003e\u003cspan\u003eDigital Geosynthetic Thickness Gauge – QualiGTX™ TG D\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe QualiGTX™ TG D digital geosynthetic thickness gauge determines the nominal thickness of geotextiles, geomembranes, geonets, and drainage geocomposites using a compact 500 N load frame. A stepper motor operates the cantilever through a transmission assembly, lowering the presser foot at a controlled speed until the closed-loop control system detects the specified load. Quality control teams and materials testing laboratories can verify roll materials against established specifications without requiring the bench space of a full-size thickness testing apparatus.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe instrument includes two presser feet with different contact areas to accommodate standard testing requirements. The 25 cm² presser foot weighs 5 N, while the 100 cm² foot weighs 20 N. Both apply a pressure of 2 kPa to the specimen surface within ±0.01 kPa. A φ112 mm reference plate (base) supports the specimen beneath the presser foot and maintains parallel contact surfaces throughout the 0 to 12 mm measurement range. The digital display provides a thickness resolution of 0.001 mm.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eA 10-inch LCD displays the loading sequence and thickness-versus-load curve in real time, allowing operators to monitor specimen compression throughout the test rather than relying solely on a final reading. Completed test records remain stored in memory for editing and further analysis, supporting laboratory calculations of mean thickness, standard deviation, and coefficient of variation across multiple specimens. With a weight of 56 kg and a bench footprint of 740 × 470 mm, the QualiGTX™ TG D offers digital thickness measurement in a space-efficient design.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eDigital Geosynthetic Thickness Gauge – QualiGTX™ TG D Applications\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe QualiGTX™ TG D is designed for production facilities and testing laboratories that routinely measure geosynthetic thickness as part of quality assurance and material verification.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eGeotextile Production Quality Control:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Measures woven and nonwoven geotextile roll materials at 2 kPa using the 25 cm² presser foot to verify production batches against published product specifications.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eGeomembrane Manufacturing:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Checks the thickness of smooth polymeric liners during extrusion, helping identify sheets outside specified tolerances before winding.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eGeonet and Drainage Geocomposite Testing:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Uses the 100 cm² presser foot to compress deformable cores and record thickness changes as the applied load increases.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eLandfill and Containment Projects:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Verifies that liner, cushioning, and cover materials meet specified thickness requirements before installation.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eRoad and Railway Subgrade Applications:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Checks separation and reinforcement geotextiles supplied for compliance with project and contract specifications.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eHydraulic and Irrigation Engineering:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Measures canal liners, reservoir membranes, and dam-facing materials where thickness data contributes to permeability and tensile calculations.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eCommercial Testing Laboratories:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Conducts incoming shipment acceptance tests using force and displacement measurements traceable to a Class 1 measuring system, with force accuracy of ±1% and displacement accuracy of ±0.5% of the indicated value.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eProduct Development Laboratories:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Evaluates the compression behavior of new fiber blends and core designs through recorded load curves.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003eStandards\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe QualiGTX™ TG D determines geosynthetic thickness in accordance with recognized international test methods.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eASTM D5199\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Standard Test Methods for Measuring the Nominal Thickness of Geosynthetics\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eISO 9863\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Geosynthetics: Determination of Thickness at Specified Pressures\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003eDigital Geosynthetic Thickness Gauge – QualiGTX™ TG D Key Features\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe QualiGTX™ TG D combines a stepper motor-driven load frame with digital closed-loop measurement to provide controlled geosynthetic thickness testing in a compact benchtop configuration.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eStepper Motor-Driven Loading:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Moves the cantilever and presser foot through a geared transmission at a consistent, repeatable speed, reducing the loading variations associated with manual thickness gauges.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eDigital Closed-Loop Control:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Monitors and adjusts force and position in real time to maintain the pressure required by the selected test method.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e10-Inch LCD with Real-Time Curve Display:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Plots the relationship between thickness and applied load during testing, providing immediate insight into specimen compression behavior.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eConsistent Resolution Across the Full Range:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Maintains a resolution of 1\/300,000 of full capacity without range switching, supporting precise readings at both low and high loads.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eClass 1 Measurement Accuracy:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Maintains force accuracy within ±1% and displacement accuracy within ±0.5% of the indicated value.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e0.001 mm Thickness Resolution:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Measures thin membranes and coatings across a 0 to 12 mm range with the resolution required for precise thickness evaluation.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eTwo Presser Foot Contact Areas:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Provides 25 cm² and 100 cm² contact areas for testing general geosynthetics, geospacers, and drainage composites with one instrument.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003ePost-Test Data Editing and Analysis:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Stores completed tests in the controller for review, correction, and recalculation without requiring the test to be repeated.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eAutomatic Overload Protection:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Stops the drive when the applied load exceeds 110% of capacity, helping protect the load cell and transmission assembly from operator error.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eElectronic Travel Limit Protection:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Restricts crosshead movement electronically to prevent the presser assembly from contacting the reference plate.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eFast and Slow Travel Control:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Offers programmable movement speeds and jog operation for rapid approach and precise final contact.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003eTheory and Method\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe measured thickness of geosynthetic materials varies with the applied load. Nonwoven geotextiles, geonets, and drainage cores can compress as pressure increases, making the contact area, applied pressure, and dwell time essential parts of a valid test result. Standard test methods define these conditions before thickness is measured as the perpendicular distance between the reference plate and presser foot after the specified load has been maintained for the required period. The QualiGTX™ TG D manages these parameters through its control software, reducing dependence on manual adjustments by the operator.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSpecimen pressure is calculated by dividing the applied force by the presser foot contact area. This relationship explains why the two presser feet have different weights while producing the same initial pressure. The 25 cm² foot weighs 5 N, and the 100 cm² foot weighs 20 N; both establish a pressure of 2 kPa. After the initial seating load is applied, the motor-driven frame increases the force as required. With a maximum capacity of 500 N, the instrument can generate a pressure of 200 kPa when using the 25 cm² presser foot, accommodating the upper pressure step specified in multi-pressure testing methods.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe closed-loop control system continuously regulates the applied force to maintain the target load. A load cell sends measured force values to the controller, which adjusts the motor position in response rather than assuming that a commanded movement will automatically produce the required force. The system maintains a resolution of one part in 300,000 of full capacity across the complete measurement range without internal range switching. Consequently, the 5 N seating load can be resolved with the same relative precision as a 400 N compression step. Force accuracy remains within ±1% of the indicated value, while displacement accuracy remains within ±0.5%.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eDigital Geosynthetic Thickness Gauge - QualiGTX™ TG D Technical Specifications\u003c\/h2\u003e\n\u003ctable class=\"table table-style-align-center\" align=\"center\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\" width=\"612\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Load\u003c\/td\u003e\n\u003ctd\u003e500 N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy Class\u003c\/td\u003e\n\u003ctd\u003eClass 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness Measuring Range\u003c\/td\u003e\n\u003ctd\u003e0 to 12 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness Resolution (Minimum Division)\u003c\/td\u003e\n\u003ctd\u003e0.001 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReference Plate Diameter\u003c\/td\u003e\n\u003ctd\u003eφ112 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePresser Foot Areas\u003c\/td\u003e\n\u003ctd\u003e25 cm² and 100 cm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e25 cm² Presser Foot Load\u003c\/td\u003e\n\u003ctd\u003e5 N (2 kPa ± 0.01 kPa)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e100 cm² Presser Foot Load\u003c\/td\u003e\n\u003ctd\u003e20 N (2 kPa ± 0.01 kPa)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForce Measurement Accuracy\u003c\/td\u003e\n\u003ctd\u003eWithin ±1% of indicated value\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplacement Measurement Accuracy\u003c\/td\u003e\n\u003ctd\u003eWithin ±0.5% of indicated value\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoad Resolution\u003c\/td\u003e\n\u003ctd\u003e1\/300,000 of maximum load, constant across full range, no range switching\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrive System\u003c\/td\u003e\n\u003ctd\u003eStepper motor with geared transmission driving the cantilever\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl System\u003c\/td\u003e\n\u003ctd\u003eFull digital closed-loop control and measurement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay\u003c\/td\u003e\n\u003ctd\u003e10-inch LCD with dynamic test process and curve display\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Handling\u003c\/td\u003e\n\u003ctd\u003ePost-test data processing, editing, and re-analysis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrosshead Travel Control\u003c\/td\u003e\n\u003ctd\u003eAutomatic fast and slow speed control, jog mode, user-settable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Protection\u003c\/td\u003e\n\u003ctd\u003eElectronic travel limit protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverload Protection\u003c\/td\u003e\n\u003ctd\u003eAutomatic shutdown above 110% of maximum load\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor\u003c\/td\u003e\n\u003ctd\u003e220 V ± 10%, 0.75 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (W × D × H)\u003c\/td\u003e\n\u003ctd\u003e740 × 470 × 1120 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e56 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Qualitest USA LC","offers":[{"title":"Default Title","offer_id":53459556630839,"sku":null,"price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0786\/1859\/1543\/files\/digital-geosynthetic-thickness-g.webp?v=1793359049"},{"product_id":"manual-geotextile-thickness-gauge","title":"Manual Geotextile Thickness Gauge","description":"\u003ch2\u003e\u003cspan\u003eManual Geotextile Thickness Gauge – QualiGTX™ TG 40\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe QualiGTX™ TG 40 manual geotextile thickness gauge determines the nominal thickness of geotextiles and geomembranes at pressures of 2 kPa, 20 kPa, and 200 kPa. Its lever-and-dead-weight mechanism applies each pressure stage without motors, load cells, or an electrical power supply. A 25 cm² presser foot contacts the specimen while calibrated weights acting through the lever arm generate the required pressure. Manufacturers, contractors, and construction materials laboratories use this instrument for incoming material inspection and routine production quality checks.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe lever-based loading system keeps the instrument compact while generating the required force. Applying 200 kPa across a 25 cm² presser foot requires 500 N at the specimen, equivalent to approximately 51 kg of dead weight if placed directly above it. The extended loading arm multiplies the applied force, reducing the weight set to a manageable size that a technician can lift with one hand. Despite its loading capacity, the complete instrument weighs 40 kg and occupies a bench area of 1050 × 520 mm.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eA dial indicator measures thickness over a range of 0 to 12 mm, with graduations of 0.01 mm. This range accommodates materials from thin liner sheets to heavy nonwoven fabrics. Testing involves placing the specimen on the reference plate, lowering the presser foot, adding the appropriate weight for the required pressure stage, and recording the measurement after the specified dwell period. Laboratories seeking compliance with established test methods without electronic systems, load cell calibration, or software validation can use the QualiGTX™ TG 40 for routine thickness determination.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eManual Geotextile Thickness Gauge – QualiGTX™ TG 40 Applications\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe QualiGTX™ TG 40 is suitable for operations that regularly measure geosynthetic thickness and do not require automated loading or electronic data recording.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eGeotextile Manufacturing\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Verifies that woven and nonwoven roll materials maintain their nominal thickness at 2 kPa throughout production runs.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eGeomembrane and Liner Production\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Checks the thickness of smooth polymeric sheets during extrusion and calendering as part of routine shift-level quality control.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eContractor Incoming Inspection\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Enables site and yard laboratories to verify delivered materials against specified requirements before installation.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eConstruction Materials Laboratories\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Expands general laboratory testing capabilities to include geosynthetic thickness measurement without adding a powered instrument to the calibration schedule.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eLandfill and Containment Projects\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Verifies liner, cushion, and separation layers against project documentation during material acceptance.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eRoad, Railway, and Embankment Works\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Measures separation and reinforcement geotextiles supplied for subgrade applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eHydraulic and Irrigation Engineering\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Evaluates canal and reservoir lining materials when thickness is relevant to permeability and durability assessment.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eTraining and Teaching Laboratories\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Demonstrates how geosynthetic thickness changes under different pressures using equipment with a visible loading mechanism.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003eStandards\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe QualiGTX™ TG 40 determines geosynthetic thickness in accordance with the recognized international test method.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eISO 9863\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Geosynthetics: Determination of Thickness at Specified Pressures.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003eManual Geotextile Thickness Gauge – QualiGTX™ TG 40 Key Features\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe QualiGTX™ TG 40 supports three-stage pressure testing through a mechanical design that eliminates electronics from the loading system.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eLever-Amplified Loading\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Multiplies the applied weight through an extended lever arm, allowing the instrument to reach 200 kPa without requiring an excessively large or heavy weight stack.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eThree Standard Pressure Stages\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Supports testing at 2 kPa, 20 kPa, and 200 kPa to match the pressure sequence required by multi-pressure test methods.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eDead-Weight Force Generation\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Establishes pressure using calibrated masses rather than an electronic transducer, eliminating the need for electronic recalibration.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSelf-Weighted 2 kPa Presser Foot\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Uses the 510.2 g presser foot alone to establish the initial pressure stage, maintaining a tolerance of ±0.01 kPa.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e25 cm² Presser Foot\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Provides the contact area specified for general geosynthetic thickness determination.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e0 to 12 mm Dial Indicator\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Measures thickness in 0.01 mm increments across a range suitable for thin membranes and heavy nonwoven fabrics.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eNo Power Supply Required\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Operates without an electrical connection, making it suitable for site laboratories and material inspection areas.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSimple Mechanical Construction\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Minimizes the number of wearing parts and keeps the loading process visible, helping reduce operator training time.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eCompact Bench Frame\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Occupies a 1050 × 520 mm footprint and weighs 40 kg, allowing it to share bench space with other quality control instruments.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003eTheory and Method\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eGeosynthetic thickness depends on the applied pressure rather than representing a single fixed dimension. Nonwoven fabrics and needle-punched materials can compress significantly as the load increases. Therefore, a thickness measurement is meaningful only when accompanied by the pressure at which it was obtained. Standard test methods control three key variables: the presser foot contact area, the applied pressure, and the duration for which that pressure is maintained. The measured thickness is the perpendicular distance between the reference plate and the presser foot at the end of the specified dwell period.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDead-weight loading provides a direct method of establishing a known pressure because the applied force is determined by mass and gravity. This approach requires no load cell or electronic system to recalibrate. The presser foot itself weighs 510.2 g, generating a force of 5 N over its 25 cm² contact area and producing exactly 2 kPa on the specimen. Consequently, the initial pressure stage requires no additional weights, and the pressure tolerance remains within ±0.01 kPa because the presser foot mass is fixed.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe lever mechanism generates the higher pressure stages while keeping the required weights manageable. A lever balances moments around its pivot, allowing a weight positioned farther from the fulcrum to produce a greater force at the shorter arm supporting the presser foot. The extended loading arm enables a relatively small weight set to generate 50 N for the 20 kPa stage and 500 N for the 200 kPa stage. The respective pressure tolerances are ±0.1 kPa and ±1 kPa. Applying these forces directly to the specimen would require a weight stack heavier than the instrument itself.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eManual Geotextile Thickness Gauge - QualiGTX™ TG 40 Technical Specifications\u003c\/h2\u003e\n\u003ctable class=\"table table-style-align-center\" align=\"center\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\" width=\"592\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoading Principle\u003c\/td\u003e\n\u003ctd\u003eLever amplified dead weight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePresser Foot Area\u003c\/td\u003e\n\u003ctd\u003e25 cm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFirst Pressure Stage\u003c\/td\u003e\n\u003ctd\u003e5 N presser foot load, 2 kPa ± 0.01 kPa (foot mass 510.2 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecond Pressure Stage\u003c\/td\u003e\n\u003ctd\u003e20 kPa ± 0.1 kPa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThird Pressure Stage\u003c\/td\u003e\n\u003ctd\u003e200 kPa ± 1 kPa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness Measuring Range\u003c\/td\u003e\n\u003ctd\u003e0 to 12 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDial Indicator Graduation\u003c\/td\u003e\n\u003ctd\u003e0.01 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003eNot required, fully mechanical operation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (W × D × H)\u003c\/td\u003e\n\u003ctd\u003e1050 × 520 × 1120 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e40 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Qualitest USA LC","offers":[{"title":"Default Title","offer_id":53459557876023,"sku":null,"price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0786\/1859\/1543\/files\/manual-geotextile-thickness-gaug.webp?v=1793359274"},{"product_id":"geomembrane-thickness-gauge","title":"Geomembrane Thickness Gauge","description":"\u003ch2\u003e\u003cspan\u003eGeomembrane Thickness Gauge – QualiGTX™ TG GM\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe QualiGTX™ TG GM geomembrane thickness gauge measures polymeric and bituminous barrier sheets under a constant contact pressure of 20 kPa. Its digital indicator provides measurements across a 0 to 10 mm range with 0.01 mm resolution, allowing operators to read thickness directly from the display without estimating values from a dial. Geomembrane manufacturers, waterproofing material producers, and construction quality control laboratories use this instrument for routine thickness verification required by liner specifications for each production lot and delivered roll.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDesigned specifically for uniform-thickness barrier materials, the QualiGTX™ TG GM uses a single pressure setting and a flat contact surface. This focused design eliminates the need to adjust weights, exchange presser feet, or apply multiple loading stages associated with general-purpose geosynthetic thickness instruments. Shorter test cycles, straightforward operator training, and simplified measurement procedures allow technicians to perform thickness checks efficiently between production inspections.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe gauge also accommodates waterproofing materials and other flat sheet products beyond conventional geomembranes. Roofing membranes, pond liners, below-grade waterproofing sheets, and similar polymer- or asphalt-based materials can be tested using the same method and contact pressure. With a maximum measuring capacity of 10 mm, the QualiGTX™ TG GM covers liner thicknesses specified for containment systems, hydraulic projects, and civil engineering applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eGeomembrane Thickness Gauge – QualiGTX™ TG GM Applications\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe QualiGTX™ TG GM is suitable for operations that routinely measure and verify the thickness of flat barrier sheets and waterproofing materials as part of their quality control procedures.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eGeomembrane Manufacturing\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Verifies that smooth HDPE, LLDPE, and PVC liner sheets maintain their specified thickness throughout extrusion and calendering processes.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eBituminous Barrier Production\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Measures asphalt-based waterproofing sheets where thickness directly affects barrier performance and material yield.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eLandfill Liner and Cap Quality Control\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Checks primary and secondary liner thickness against project specifications before installation crews deploy the material.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eMining and Tailings Containment\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Verifies liner thickness for leach pads, ponds, and tailings facilities where the sheet provides the required containment barrier.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eBuilding Waterproofing and Roofing\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Tests membranes and below-grade waterproofing materials intended for basement, deck, and roof applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eCanal, Reservoir, and Pond Lining\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Confirms liner thickness for hydraulic projects where permeability calculations rely on measured material thickness.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eContractor Incoming Inspection\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Provides site and yard laboratories with an efficient method for checking delivered materials before installation.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eThird-Party Inspection Bodies\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Supports witness testing and shipment acceptance through consistent measurements under a single, defined contact pressure.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003eGeomembrane Thickness Gauge – QualiGTX™ TG GM Key Features\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe QualiGTX™ TG GM integrates a digital thickness indicator with fixed-pressure loading in an instrument designed specifically for barrier sheet measurement.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eDigital Thickness Indicator\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Presents measurements numerically, eliminating parallax and interpolation errors associated with reading an analog dial.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e0.01 mm Resolution\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Provides measurement detail suitable for the tolerance ranges specified for common liner and membrane thicknesses.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eFixed 20 kPa Contact Pressure\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Applies a consistent pressure for every measurement without requiring weight selection, helping maintain repeatable results across operators and shifts.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e0 to 10 mm Measuring Range\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Accommodates materials ranging from thin waterproofing sheets to heavy containment liners without requiring setup changes.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eFlat, Parallel Contact Faces\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Maintains alignment between the presser face and reference anvil, helping ensure that readings represent actual sheet thickness rather than errors caused by angular misalignment.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003ePurpose-Built Design\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Eliminates the multiple loading stages found in general-purpose geosynthetic testing instruments, reducing measurement time and operator training requirements.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eWide Material Compatibility\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Measures polymeric and bituminous barriers, roofing membranes, tanking materials, and other flat sheet products using the same bench-mounted setup.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eCompact Bench Design\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Requires minimal workspace, making the instrument suitable for production floor quality control stations and site laboratories.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003eTheory and Method\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eGeomembranes respond to applied pressure differently from nonwoven geotextiles. Textile structures can undergo measurable compression as pressure increases, making thickness measurements at multiple pressure stages necessary. By comparison, solid polymeric and asphalt-based barriers with uniform thickness exhibit minimal deformation at the specified test pressures. Applying one defined pressure therefore provides a stable and repeatable thickness measurement. In this application, the contact pressure seats the presser foot against the specimen and displaces trapped air rather than compressing the material. A pressure of 20 kPa is sufficient for this purpose without deforming the sheet.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe pressure applied to a specimen depends on the applied force divided by the contact area, with both parameters fixed by the instrument. The sheet is positioned between a flat reference anvil and a parallel presser face. Once the applied load stabilizes, the instrument measures the perpendicular distance between these surfaces to determine sheet thickness. Maintaining parallel alignment is particularly important because even a slight tilt can introduce measurement errors across the contact area. Allowing the load to remain in place for the specified dwell period ensures that the contact surfaces are fully seated before the reading is recorded.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eMeasurement resolution must also be evaluated in relation to the specimen's nominal thickness. For a 1.5 mm HDPE liner, a 0.01 mm measurement division represents approximately 0.7% of the nominal thickness. This level of resolution falls comfortably within the tolerance ranges typically specified for liner materials. The method is intended specifically for smooth sheets. Textured and structured membranes contain raised surface features that a flat presser face may bridge, making a different contact geometry and test method necessary for accurate thickness measurement.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eGeomembrane Thickness Gauge - QualiGTX™ TG GM Technical Specifications\u003c\/h2\u003e\n\u003ctable class=\"table table-style-align-center\" align=\"center\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\" width=\"612\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasuring Range\u003c\/td\u003e\n\u003ctd\u003e0 to 10 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGraduation (Division Value)\u003c\/td\u003e\n\u003ctd\u003e0.01 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndicator Type\u003c\/td\u003e\n\u003ctd\u003eDigital display indicator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplied Contact Pressure\u003c\/td\u003e\n\u003ctd\u003e0.02 MPa (20 kPa)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePresser Face Type\u003c\/td\u003e\n\u003ctd\u003eFlat parallel face for uniform-thickness materials\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial Scope\u003c\/td\u003e\n\u003ctd\u003ePolymeric and bituminous barrier sheet, waterproofing membranes, flat sheet products\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormat\u003c\/td\u003e\n\u003ctd\u003eBenchtop\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Qualitest USA LC","offers":[{"title":"Default Title","offer_id":53459562955063,"sku":null,"price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0786\/1859\/1543\/files\/geomembrane-thickness-gauge12363.webp?v=1793359450"},{"product_id":"multi-layer-geotextile-thickness-gauge","title":"Multi-Layer Geotextile Thickness Gauge","description":"\u003ch2\u003e\u003cspan\u003eMulti-Layer Geotextile Thickness Gauge – QualiGTX™ TG ML\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe QualiGTX™ TG ML Multi-Layer Geotextile Thickness Gauge measures the thickness of individual layers within multilayer geosynthetic products without separating the bonded components. Mechanically separating bonded geocomposites can be difficult, and peeling a needle-punched nonwoven layer away from a drainage core alters the dimension being evaluated. This instrument maintains a stack of specimens under the specified pressure, allowing individual layers to be assessed in their compressed condition as installed.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe gauge features a rigid frame with a fixed, flat lower plate and a movable upper plate of matching dimensions. Both plates have a rectangular shape and sufficient rigidity to limit deflection to no more than 0.1 mm across the specimen area under the test pressure, preventing measurable errors caused by the frame itself. The upper plate can be locked at any position along its travel, maintaining the target pressure throughout the measurement rather than only during the loading process.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFour smooth intermediate plates, each 1.0 mm thick and matching the specimens in area and shape, separate the five specimens arranged in the stack. Manufacturers of drainage geocomposites, geosynthetic clay liners, and composite separation products use the QualiGTX™ TG ML to record individual layer thicknesses for technical data sheets and conformity documentation. This procedure is performed after the average total thickness of the multilayer product has been established through single-layer measurement.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eMulti-Layer Geotextile Thickness Gauge – QualiGTX™ TG ML Applications\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe QualiGTX™ TG ML meets the need for individual layer thickness reporting when the components of a multilayer geosynthetic product cannot be separated.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eDrainage Geocomposite Manufacturing\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Measures the nonwoven filter layer and drainage core independently, allowing the thickness of each component to be reported on the product data sheet.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eGeosynthetic Clay Liner Production\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Records carrier and cover geotextile thicknesses in bentonite-cored products whose layers remain bonded together.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eLaminated and Composite Geotextile Production\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Determines individual layer thicknesses in products that combine nonwoven, woven, and film components.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eConformity and Type Testing\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Provides layer-specific measurements required for product certification documentation and CE marking dossiers.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eThird-Party Testing Laboratories\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Expands geosynthetic testing capabilities beyond total-product thickness measurement to include individual layer determination.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eProduct Development Laboratories\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Evaluates compression behavior in each layer of a composite as bonding methods, fiber weight, or core geometry are modified during development.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eDispute and Claim Investigation\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Verifies whether a delivered composite meets the specified thickness requirements for its individual layers.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eAcademic and Research Geosynthetics Programs\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Supports investigations into layer interactions and compression characteristics in bonded composite systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003eMulti-Layer Geotextile Thickness Gauge – QualiGTX™ TG ML Key Features\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe QualiGTX™ TG ML is designed around the apparatus requirements for determining individual layer thicknesses rather than being adapted from a general-purpose thickness gauge.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eFixed and Movable Plate Frame\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Combines a fixed, flat lower plate with a movable upper plate of identical dimensions, positioning the specimen stack between two parallel reference surfaces.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eLockable Upper Plate\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Locks at any position along its travel to maintain the specimen stack at the test pressure during measurement, eliminating the need to release the load between compression and reading.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eControlled Plate Deflection\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Limits plate deflection to less than 0.1 mm across the specimen area under test pressure, preventing frame flexure from affecting the measured layer thickness.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eWeight-Limited Upper Plate\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Keeps the upper plate's mass below the level at which its own weight would exceed the specified specimen pressure.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eFour Matched Separator Plates\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Uses four smooth, identical plates with the same area and shape as the specimens to prevent adjacent samples from interlocking within the stack.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e1.0 mm Separator Plate Thickness\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Establishes a known, consistent separation between specimens, supporting repeatable measurements across successive tests.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eFive-Specimen Stack Capacity\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Multiplies the dimension being measured, enabling thin individual layers to be resolved more clearly relative to the instrument's graduation.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eRectangular Plate Geometry\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Follows the specimen shape specified by the test method and promotes uniform pressure distribution across the contact area.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003eTheory and Method\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eDetermining the thickness of an individual layer within a bonded composite presents a fundamental challenge. Needle-punched and thermally bonded products are designed to keep their layers joined. Attempts to separate these components can stretch fibers, disrupt the material structure, and produce measurements that no longer represent the product in its manufactured condition. Instead, this method keeps the composite intact and establishes the required measurement conditions around it. The product is compressed to the pressure at which its thickness is defined and held in that state while the individual layer boundaries are evaluated.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eUsing a stack of five specimens provides more than a convenient testing arrangement. An individual layer in a geocomposite may measure considerably less than one millimeter thick, placing its dimension close to the resolution limits of mechanical measurement. Repeating the layer five times within the stack increases the measured dimension, allowing the instrument's existing resolution to provide finer effective resolution for each individual layer. The four intermediate plates prevent neighboring specimens from nesting together. Without these separators, compressed nonwoven surfaces can interlock with adjacent specimens, reducing the overall stack height and affecting the result.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003ePlate performance is essential to measurement accuracy. The lower plate remains stationary while the upper plate moves downward, and both plates must maintain their flatness under load. Deflection exceeding 0.1 mm across the specimen area can introduce an error comparable to the thickness of the layer being measured. The upper plate's mass is also restricted to ensure that its weight alone does not compress the specimen beyond the specified pressure before testing begins. Locking the upper plate in position preserves the compressed specimen geometry throughout the measurement, ensuring that the recorded thickness represents the layer under load rather than its thickness after the material begins to rebound.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eMulti-Layer Geotextile Thickness Gauge - QualiGTX™ TG ML Technical Specifications\u003c\/h2\u003e\n\u003ctable class=\"table table-style-align-center\" align=\"center\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\" width=\"611\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrame Configuration\u003c\/td\u003e\n\u003ctd\u003eFixed flat lower plate with movable upper plate of identical size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePlate Geometry\u003c\/td\u003e\n\u003ctd\u003eRectangular\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUpper Plate Positioning\u003c\/td\u003e\n\u003ctd\u003eLockable at any point in its travel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUpper Plate Self-Weight\u003c\/td\u003e\n\u003ctd\u003eLimited so specimen pressure stays within the specified limit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePlate Rigidity\u003c\/td\u003e\n\u003ctd\u003eDeflection no greater than 0.1 mm over the specimen area under test pressure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntermediate Separator Plates\u003c\/td\u003e\n\u003ctd\u003e4, smooth and identical, matching specimen area and shape\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeparator Plate Thickness\u003c\/td\u003e\n\u003ctd\u003e1.0 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecimen Capacity\u003c\/td\u003e\n\u003ctd\u003e5 specimens per stack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasuring Device Graduation\u003c\/td\u003e\n\u003ctd\u003e0.1 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrerequisite Test\u003c\/td\u003e\n\u003ctd\u003eMean total thickness of the multilayer product determined by single-layer measurement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Qualitest USA LC","offers":[{"title":"Default Title","offer_id":53459571474743,"sku":null,"price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0786\/1859\/1543\/files\/multi-layer-geotextile-thickness.webp?v=1793359632"},{"product_id":"lever-operated-geotextile-thickness-gauge","title":"Lever-Operated Geotextile Thickness Gauge","description":"\u003ch2\u003e\u003cspan\u003eLever-Operated Geotextile Thickness Gauge – QualiGTX™ TG L\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch4\u003e\u003cspan\u003eLever-Type Nominal Thickness Gauge for Geotextiles and Geomembranes\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003eThe QualiGTX™ TG L lever-operated geotextile thickness gauge measures the thickness of geotextiles and geomembranes under three specified pressures: 2 kPa, 20 kPa, and 200 kPa. It enables manufacturers, testing laboratories, and project inspectors to verify nominal material thickness against technical data sheets and contract requirements. Its lever mechanism amplifies the force generated by a compact weight set, allowing the instrument to achieve high contact pressures without requiring a bulky stack of dead weights. This design provides a stable, bench-mounted solution for geosynthetics quality control laboratories.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe instrument uses a 25 cm² presser foot, the contact area specified in ISO 9863 for geosynthetics with uniform thickness. Four interchangeable presser feet are supplied, with one fitted at a time on the single testing station. Measurements are performed sequentially, testing one specimen at a time under each pressure setting. A dial indicator with a 0 to 12 mm measuring range and 0.01 mm resolution provides direct thickness readings without electronic components or an external power supply.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIts straightforward mechanical construction simplifies operation and routine maintenance for technicians of varying experience levels. The limited number of moving components helps minimize calibration concerns and supports long-term service. The frame accommodates woven geotextiles, nonwoven fabrics, and smooth barrier sheets. Qualitest supplies the TG L for incoming material inspection, production quality control, and independent certification testing throughout North America.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eLever-Operated Geotextile Thickness Gauge – QualiGTX™ TG L Applications\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe QualiGTX™ TG L is suitable for applications requiring dependable thickness measurements of geosynthetic materials under controlled compressive pressures.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eGeotextile Manufacturing\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Measures the nominal thickness of woven and nonwoven geotextiles during production and prior to shipment.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eGeomembrane Production\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Inspects the thickness of polymeric and bituminous barrier sheets used in landfill, pond, and containment lining systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eGeosynthetics QC Laboratories\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Provides thickness measurements for technical data sheets and material conformance reports.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eCivil and Highway Construction\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Verifies that supplied separation and filtration fabrics meet project specifications.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eWater Conservancy and Hydraulic Works\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Assesses geotextiles and membranes used in dams, canals, and embankment protection applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eHydraulic Property Testing\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Determines specimen thickness required for permeability and transmissivity calculations.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eResearch and Material Development\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Evaluates fabric compression behavior as applied pressure increases from 2 kPa to 200 kPa.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003eStandards\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe QualiGTX™ TG L conforms to the internationally recognized test method for measuring geosynthetic thickness under specified compressive pressures.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eISO 9863 - Geosynthetics: Determination of Thickness at Specified Pressures\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003eLever-Operated Geotextile Thickness Gauge – QualiGTX™ TG L Key Features\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe TG L integrates a mechanical lever-loading mechanism with precision dial measurement to deliver repeatable thickness results at three defined pressure levels.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eLever-Amplified Loading\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Increases the force generated by a compact weight set, achieving pressures up to 200 kPa without bulky dead-weight assemblies.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eThree Defined Pressure Levels\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Applies 2 kPa, 20 kPa, and 200 kPa within specified tolerances to meet standard testing procedures.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e25 cm² Presser Foot\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Provides the contact area required for thickness measurement of uniform geotextiles and geomembranes.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eFour Interchangeable Presser Feet\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Allows the operator to change presser feet as required at the single testing station, with measurements conducted individually.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e0.01 mm Dial Indicator Resolution\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Detects small variations in material thickness across a measuring range of 0 to 12 mm.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eCalibrated Presser Foot Weight\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Each 510.2 g presser foot generates the 5 N base load required for nominal thickness measurements without additional weights.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eFully Mechanical Operation\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Requires no electrical power or software, making setup straightforward in field laboratories and production facilities.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eCompact, Stable Frame\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Features a 40 kg bench-top construction that minimizes vibration and maintains parallel alignment between the presser foot and reference plate.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSimple Operating Design\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Reduces operator training requirements and simplifies routine maintenance.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003eTheory and Method\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe measured thickness of geosynthetic materials varies according to the pressure applied during testing. Nonwoven geotextiles consist of compressible fiber networks that become thinner as the applied load increases. Accordingly, standard test methods define thickness as the distance between a flat reference plate and a parallel presser foot under a specified pressure. The measurement at 2 kPa represents nominal thickness, while readings at 20 kPa and 200 kPa indicate how the material responds to higher, service-related compressive loads.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe TG L generates the required pressures using a lever-based loading principle. Since pressure is calculated by dividing force by contact area, a 25 cm² presser foot requires 5 N at 2 kPa, 50 N at 20 kPa, and 500 N at 200 kPa. Each presser foot weighs 510.2 g, producing the initial 5 N load. To reach the higher pressure levels, the operator places additional weights on the extended lever arm. This mechanism amplifies the applied force at the presser foot, enabling the instrument to achieve pressures up to 200 kPa within a tolerance of ±1 kPa.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFor testing, the operator positions a conditioned specimen on the reference plate and carefully lowers the presser foot onto its surface. Once the applied load has stabilized, typically after 30 seconds in accordance with ISO 9863, the technician records the thickness directly from the dial indicator. The procedure is repeated at the next pressure level using the same specimen or a fresh one. Results from multiple specimens are averaged to establish a representative thickness value for the sample roll.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eLever-Operated Geotextile Thickness Gauge – QualiGTX™ TG L Technical Specifications\u003c\/h2\u003e\n\u003ctable class=\"table table-style-align-center\" align=\"center\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\" width=\"429\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eQualiGTX™ TG L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Principle\u003c\/td\u003e\n\u003ctd\u003eLever-amplified dead-weight loading\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTest Stations\u003c\/td\u003e\n\u003ctd\u003e1 (one specimen tested at a time)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePresser Foot Area\u003c\/td\u003e\n\u003ctd\u003e25 cm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePresser Feet Supplied\u003c\/td\u003e\n\u003ctd\u003e4 (interchangeable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePresser Foot Self-Weight\u003c\/td\u003e\n\u003ctd\u003e510.2 g each (5 N)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFirst Pressure Step\u003c\/td\u003e\n\u003ctd\u003e2 kPa ± 0.01 kPa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecond Pressure Step\u003c\/td\u003e\n\u003ctd\u003e20 kPa ± 0.1 kPa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThird Pressure Step\u003c\/td\u003e\n\u003ctd\u003e200 kPa ± 1 kPa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDial Indicator Range\u003c\/td\u003e\n\u003ctd\u003e0 to 12 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Graduation\u003c\/td\u003e\n\u003ctd\u003e0.01 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (L × W × H)\u003c\/td\u003e\n\u003ctd\u003e730 × 320 × 400 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e40 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Qualitest USA LC","offers":[{"title":"Default Title","offer_id":53459580420407,"sku":null,"price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0786\/1859\/1543\/files\/lever-operated-geotextile-thickn.webp?v=1793359806"},{"product_id":"automatic-geosynthetic-thickness-gauge","title":"Automatic Geosynthetic Thickness Gauge","description":"\u003ch2\u003eAutomatic Geosynthetic Thickness Gauge – QualiGTX™ TG A\u003c\/h2\u003e\n\u003cp\u003eThe QualiGTX™ TG A automatic geosynthetic thickness gauge determines nominal thickness using seven dedicated test modes for geotextiles, geomembranes, geonets, geospacers, and drainage geocomposites. Its dual servo motor system drives a precision ball screw to lower the presser foot at a controlled speed, applying test pressures of 2 kPa, 20 kPa, or 200 kPa without operator influence. The instrument is suitable for manufacturers, independent testing laboratories, and construction quality control departments that need to verify geosynthetic roll materials against project requirements before shipment.\u003c\/p\u003e\n\u003cp\u003eAll seven test configurations are integrated into one instrument, eliminating the need for separate thickness gauges for geotextiles, uniform barriers, and non-uniform barriers. Interchangeable 100 cm² and 25 cm² presser feet accommodate planar materials, while specialized coaxial presser points measure polymeric and bituminous barriers, including applications involving forces as low as 0.1 N. Technicians select the required test method through the industrial touchscreen, after which the instrument automatically performs the loading sequence, dwell period, and measurement.\u003c\/p\u003e\n\u003cp\u003eThickness measurements are captured by a dial gauge offering 0.001 mm resolution over a 0 to 10 mm range. Integrated control software records each result for statistical evaluation and calculates averages across ten specimens, as required by most applicable test methods. Completed test data can also be transferred through the network to a Laboratory Information Management System (LIMS) or quality database. With overall dimensions of 1150 × 670 mm, the QualiGTX™ TG A provides extensive testing capabilities while maintaining an efficient laboratory footprint.\u003c\/p\u003e\n\u003ch2\u003eAutomatic Geosynthetic Thickness Gauge – QualiGTX™ TG A Applications\u003c\/h2\u003e\n\u003cp\u003eThe QualiGTX™ TG A provides reliable thickness measurement for geosynthetic materials throughout manufacturing, product development, laboratory testing, and construction quality control.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eGeotextile Manufacturing: Measures woven and nonwoven geotextile roll materials under 2 kPa pressure using the 25 cm² presser foot to verify nominal thickness against published product specifications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eGeomembrane Production: Evaluates the thickness of uniform polymeric and bituminous barrier sheets using the flat presser foot, with coaxial presser points available for materials featuring irregular surfaces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eDrainage Geocomposite and Geospacer QC: Uses the 100 cm² presser foot at pressures of 2, 20, and 200 kPa to assess the compression and deformation of drainage cores under different loading conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eLandfill and Containment Engineering: Verifies the thickness of liner and cover system materials against project requirements before installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eHighway and Railway Construction: Inspects separation, filtration, and reinforcement geotextiles to confirm compliance with construction contract specifications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eHydraulic and Water Resources Projects: Measures canal liners, dam-facing membranes, and reservoir barriers where material thickness is an important factor in permeability calculations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eThird-Party Testing Laboratories: Performs shipment acceptance testing across multiple geosynthetic test methods using one instrument, helping streamline laboratory accreditation requirements.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eGeosynthetic Research and Product Development: Evaluates compression characteristics across the complete pressure range when developing new drainage core designs or polymer formulations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eStandards\u003c\/h2\u003e\n\u003cp\u003eThe QualiGTX™ TG A supports internationally recognized testing procedures for measuring geosynthetic thickness under specified pressure conditions.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eASTM D5199 – Standard Test Methods for Measuring the Nominal Thickness of Geosynthetics\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eISO 9863 – Geosynthetics: Determination of Thickness at Specified Pressures\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAutomatic Geosynthetic Thickness Gauge – QualiGTX™ TG A Key Features\u003c\/h2\u003e\n\u003cp\u003eThe QualiGTX™ TG A integrates automated servo-driven loading, specialized presser configurations, and touchscreen operation into a single laboratory instrument.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eSeven Thickness Test Modes in One Frame: Accommodates planar geosynthetics, uniform barriers, and non-uniform barriers, eliminating the need to purchase and calibrate multiple dedicated instruments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eDual Servo Motor Drive: Controls the upward and downward movement of the presser assembly at a consistent speed, minimizing variations associated with manual loading.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eHigh-Precision Ball Screw Transmission: Converts motor rotation into smooth, controlled vertical movement with minimal backlash, maintaining parallel alignment between the presser foot and reference plate.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eNo Presser Foot Changeover Between Methods: Allows individual test modes to operate independently, enabling technicians to switch between testing procedures without changing hardware or repeating instrument setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003e0.001 mm Dial Gauge Resolution: Measures thin membranes and coatings across a 0 to 10 mm range, providing the measurement precision required by applicable specifications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eIndustrial Touchscreen Controller: Combines test method selection, real-time measurement displays, and operating status on a single interface designed for laboratory and production environments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eMulti-Specimen Averaging: Automatically calculates the average of multiple measurements on-screen, supporting the ten-specimen sampling requirements specified by geosynthetic test methods.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eDirect Result Readout and Re-Analysis: Retains completed test records for subsequent examination, allowing technicians to review measurement data without repeating the test.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eNetwork Upload of Test Results: Sends measurement records to a LIMS, server, or quality management database, minimizing errors associated with manual data entry.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003ePurpose-Built Control Software: Features internally developed software specifically designed for geosynthetic thickness measurement, with predefined loading sequences and dwell periods for each test method.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eCompact Floor Footprint: Combines multiple testing configurations within a 1150 × 670 mm footprint, helping preserve valuable workspace in busy quality control laboratories.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTheory and Method\u003c\/h2\u003e\n\u003cp\u003eGeosynthetic thickness is influenced by the pressure applied during measurement rather than being a constant material dimension. Nonwoven geotextiles, geonets, and drainage cores can undergo measurable compression under load. For this reason, a meaningful thickness result must identify the applied pressure, presser foot contact area, and dwell time. Relevant test methods establish specific presser foot dimensions and loading pressures, then measure the perpendicular distance between the reference plate and presser foot after maintaining the prescribed load for a defined period. The QualiGTX™ TG A mechanically controls these testing conditions to minimize variations caused by manual operation.\u003c\/p\u003e\n\u003cp\u003eThe pressure applied to a specimen is determined by the relationship between the applied force and the contact area of the presser foot. The 100 cm² presser foot has a weight of 2041 g and applies a force of 20 N, producing a pressure of 2 kPa across its contact surface. Similarly, the 25 cm² presser foot weighs 510.2 g and applies a force of 5 N, generating the same 2 kPa pressure over its smaller contact area. This arrangement maintains comparable testing pressure across both configurations. The dual servo motors and precision ball screw mechanism provide additional calibrated loading to achieve pressures of 20 kPa and 200 kPa, maintaining accuracy within ±0.1 kPa and ±1 kPa, respectively.\u003c\/p\u003e\n\u003cp\u003ePolymeric and bituminous barriers with irregular surfaces require an alternative measurement arrangement. A conventional flat presser foot may rest on raised surface areas rather than accurately measuring the material thickness. To address this, the instrument uses matching coaxial presser points with a radius of 1 ± 0.1 mm, allowing the contact points to seat against the specimen surface. Coaxial point forces of 0.6 N and 0.56 N are applied across three predefined test modes, covering applied loads from 0.1 N to 0.5 N and from 0.5 N to 1.0 N. The two presser points apply force through the sheet, while the dial gauge measures their resulting separation with 0.001 mm resolution.\u003c\/p\u003e\n\u003ch2\u003eAutomatic Geosynthetic Thickness Gauge - QualiGTX™ TG A Technical Specifications\u003c\/h2\u003e\n\u003ctable class=\"table table-style-align-center\" align=\"center\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\" width=\"612\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTest Modes\u003c\/td\u003e\n\u003ctd\u003e7 thickness test configurations in one instrument\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePresser Foot Area (Geospacers and Drainage Geocomposites)\u003c\/td\u003e\n\u003ctd\u003e100 cm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePresser Foot Area (General Geosynthetics)\u003c\/td\u003e\n\u003ctd\u003e25 cm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePresser Point Radius\u003c\/td\u003e\n\u003ctd\u003e1 ± 0.1 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasuring Foot Diameter\u003c\/td\u003e\n\u003ctd\u003eφ10 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e100 cm² Presser Foot Load\u003c\/td\u003e\n\u003ctd\u003e20 N (2 kPa ± 0.01 kPa; foot mass 2041 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e100 cm² Foot, Second Load Stage\u003c\/td\u003e\n\u003ctd\u003e20 kPa ± 0.1 kPa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e100 cm² Foot, Third Load Stage\u003c\/td\u003e\n\u003ctd\u003e200 kPa ± 1 kPa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e25 cm² Presser Foot Load\u003c\/td\u003e\n\u003ctd\u003e5 N (2 kPa ± 0.01 kPa; foot mass 510.2 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e25 cm² Foot, Second Load Stage\u003c\/td\u003e\n\u003ctd\u003e20 kPa ± 0.1 kPa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e25 cm² Foot, Third Load Stage\u003c\/td\u003e\n\u003ctd\u003e200 kPa ± 1 kPa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoaxial Point Force, Mode 1\u003c\/td\u003e\n\u003ctd\u003e0.6 N ± 0.1 N; applied pressure 20 kPa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoaxial Point Force, Mode 2\u003c\/td\u003e\n\u003ctd\u003e0.56 N + 0.05 N; applied force 0.5 N to 1.0 N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoaxial Point Force, Mode 3\u003c\/td\u003e\n\u003ctd\u003e0.56 N + 0.05 N; applied load 0.1 N to 0.5 N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDial Gauge Measuring Range\u003c\/td\u003e\n\u003ctd\u003e0 to 10 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDial Gauge Resolution\u003c\/td\u003e\n\u003ctd\u003e0.001 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Accuracy\u003c\/td\u003e\n\u003ctd\u003e0.001 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDivision Value\u003c\/td\u003e\n\u003ctd\u003e0.001 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrive System\u003c\/td\u003e\n\u003ctd\u003eDual servo motors with high-precision ball screw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl System\u003c\/td\u003e\n\u003ctd\u003eIndustrial touchscreen microcomputer with proprietary test software\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Handling\u003c\/td\u003e\n\u003ctd\u003eMulti-reading averaging, result storage, network upload\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003eAC 220 V, 50 Hz (110V is also available)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (W × D × H)\u003c\/td\u003e\n\u003ctd\u003e1150 × 670 × 1280 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e180 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Qualitest USA LC","offers":[{"title":"Default Title","offer_id":53459592249655,"sku":null,"price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0786\/1859\/1543\/files\/automatic-geosynthetic-thickness.webp?v=1793362630"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0786\/1859\/1543\/collections\/geotextile-thickness-gauges10123.webp?v=1793358856","url":"https:\/\/qualitest.us\/es\/collections\/geotextile-thickness-gauge.oembed","provider":"Qualitest USA LC","version":"1.0","type":"link"}