The body of the thickness gauge is made from high quality, lightweight and durable engineering plastics It is designed with a large digital LCD display for convenient data reading Supports reset function at any position, metric and imperial system switch, manual power on/off and automatic cutoff Suitable for measuring situations requiring special insulation and protection magnetic or anti-scratch Can be used to measure the thickness of paper, PU leather, sheet metal, jewelry, battery, magnetic materials, etc. Features: This thickness gauge has a large digital LCD display for convenient data reading. The main body is made from high quality engineering plastics, lightweight and durable. It has a shape similar to that of micrometer, and the function is also similar to micrometer, mainly used for measuring the outer diameter of tube or rod and measuring thickness. Instruction: 1. Press the on/off button to turn on. 2. Check if it shows 0.00, if not, reset it by pressing the ZERO button. 3. Press the pressing bulge and place the coin inside then release the bulge. Read the measurement result and measure a few more times then average the results to get a more accurate one. Features: Measuring range: 0-12.7mm / 0.5inch Resolution: 0.01mm, 0.0005inch Accuracy: 0.1mm, 0.005 inch Operating temperature: 0 ~ 40 Storage temperature: -20 ~ 70 Relative humidity: 80% Power supply: LR44 button battery Size: 106 x 38 x 22 mm Blue color Packing: 1 x Thickness gauge