{"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","url":"https:\/\/qualitest.us\/products\/lever-operated-geotextile-thickness-gauge","provider":"Qualitest USA LC","version":"1.0","type":"link"}