Features: It is a portable coating thickness gauge, which can measure the thickness of non-metal coating on metal substrate quickly, nondestructive and accurately. Widely used in manufacturing, automotive industry, metal processing, chemical industry, commodity inspection and other industries. Car Mode / User Mode two in one, can be chose freely Digital LCD display, and high accuracy, accurate measurement, easy to read Compact design and easy to carry Automatic shutdown saves electricity Three measurement modes: single measurement, continuous measurement and differential measurement Suitable for measuring coatings on iron, aluminum and zinc Metric and imperial units can be converted Specifications: Measurement Range: 0 - 1.8mm/ 0 - 71mil Car mode resolution: 0.05mm/2mil User mode resolution: 0.01mm/1mil Accuracy: +/-0.1mm Minimum diameter of substrate:50mm Minimum thickness of substrate:0.5mm Temperate range:18-30℃ Work humidity range: 10-80%RH Power: 2*1.5V AAA battery (Not included) Size: 10.5 x 6cm / 4.13 x 2.36in Weight: 140g Package included: 1 x Coating thickness gauge (battery Not included) 1 x manual 6 x Calibration film