TOPCHANCES Portable Handheld Pointer Thickness Dial Indicator 0.01mm Percentile Gauge Metal Thickness Tester for Leather Cloth Flat Paper Rubber Measure Instruments(Blue) Accuracy: percentile thickness gauge 0.01 mm The pointer type thickness gauge does not require a battery, so you don't have to worry about the battery being dead. Small and easy to carry, accurate measurement, easy to operate. Suitable to measure the thickness and measure curved surface thicknesss.Can be used to measure jewelry, leather, metal sheets, paper, thin film, wire and similar materials. Note:The test is not suitable for hard material such as sheet metal.