1. Measuring the thickness of non-magnetic coating on the magnetic metal substrate. 2. Automatically identifying the non-magnetic metal substrate and magnetic metal substrate. 3. Single measurement, continuous measurement and differential measurement available. 4. With maximum, minimum and average value viewing function. 5. Zero-point calibration, Offset Calibration and basic calibration available. Metric and imperial units of measurement optional. LCD backlight. Automatic shutdown. Measurementrange:0-1300um/51mil/1.3mm Resolution:(0.1m(Less than 100um),1m(2100um))/0.1mil/0.001mm Measurement error:less than equal 150um,±5um, Greater than 150um ±(3%H+1um) Minimum diameter of magnetic metal substrate:12mm Minimum thickness of magnetic metal substrate:0.5mm Minimum radius of curvature for magnetic convex substrate:2mm Minimum radius of curvature for magnetic concave substrate:11mm Minimum diameter of non-magnetic metal substrate:50mm Minimum thickness of non-magnetic metal substrate:0.5mm Working voltage:DC 3.7V (Lithium battery capacity 1000mAh) Operaling temperature range:-20-40℃ Operating humidity:10-95%RH Reminder:This instrument is equipped with rechargeable battery. lf you can't turn on the product, please use it after charging (power adapter specification: DC 5V/1A, namely ordinary mobile phone charger). This instrument is not shipped with power adapter. Colour:Green & Black Material:ABS Package Contents: 1 * coating thickness gauge 1 * calibration kit 1 * data cable 1 * storage bag