1It can quickly and accurately measure the thickness of the non-magnetic coating on the magnetic metal substrate and the thickness of the non-metallic coating on the non-magnetic metal substrate. 2At the same time, it can automatically identify magnetic metal substrates and non-magnetic metal substrates. 3Widely used in manufacturing, metal processing industry, chemical industry, commodity inspection and other inspection fields. 4With single, continuous two measurement methods, basic, zero two calibration functions, unit selection and storage functions. 5It also features screen rotation, charging protection, multiple interface displays, screen brightness selection and automatic shutdown selection.