This product is a portable coating thickness gauge with a high-definition color screen that can quickly, non-destructively and accurately measure the thickness of non-magnetic coatings on magnetic metal substrates and the thickness of non-metal coatings on non-magnetic metal substrates. At the same time it can automatically identify magnetic metal substrate and non-magnetic metal substrate, and is widely used in manufacturing, metal processing industry, chemical industry, commodity inspection and other testing areas. Menu operation and color-screen HD display. Thickness measurement of non-magnetic coating on magnetic metal substrate surface and non-metallic coating on non-magnetic metal substrate. Two measurement methods: single measurement, continuous measurement. Functions: Basic calibration and Zero-point calibration available. Metric/imperial unit and storage function. Screen rotation, charge protection,multi-interface displays, screen brightness selection. Voice broadcast. Automatic shutdown. Measurementrange:0-1300um/51mil Resolution:(0.1m(Less than 100um),1m(2100um))/0.1mil Measurement error:Less than 150um 5um, 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) Number of data storage:Max.1500 pens 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 ordinarymobile phone charger). This instrument is not shipped with power adapter. Colour:Black & Green Material:ABS Package Contents: 1 * coating thickness gauge 1 * calibration kit 1 * data cable 1 * storage bag Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.