【Range Measuring range】 Measuring range: 0-12 mm / 0.5 ", Resolution: 0.01 mm, 0.0005 ", Accuracy: ± 0.1mm, 0.005 " 【Performance Product Performance】 This thickness caliper supports any position reset function, metric and imperial system switch, power on / off manual and automatic power off 【High quality】 The feeler gauge body is made from high quality engineering plastics, lightweight and durable 【LCD display screen】 gauge The gauge thickness is designed with large digital LCD display for convenient data reading 【Wide application】 This thickness gauge is suitable for measuring situations which especially require insulation and magnetic or anti-scratch protection, it can be used to measure the thickness of paper, PU leather, sheet metal, jewelry, battery and magnetic materials, etc. Specifications: Measuring range: 0-12 mm / 0.5 " Resolution: 0.01 mm, 0.0005 " Accuracy: ± 0.1 mm, 0.005 " Operating temperature: 0 ~ 40 ℃ Storage temperature: -20 ~ 70 ℃ Relative humidity: ≤80% Power supply: button cell LR44 / SR44 1.5 V (not included) Size: 110 x 60 x 20 mm / 4.33 x 2.36 x 0.78 " Screen size: 33 x 10 mm / 1.3 x 0.39 " Quantity: 1 piece, blue 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 trigger and set the workpiece key then release