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 R ange: 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