Features: Basic Functions: it can measure the non-metallic coating thickness(such as paint, film, etc.) of metal substrate surface quickly and accurately. Car/User Dual Modes: you can measure coating thickness of substrate material for calibration. And the car mode can be used without calibration, it measures coating thickness of 3 substrate materials(iron, aluminum and zinc), suitable for measuring the thickness of car. 3 Measurement Modes Switchable: Single measurement(SNG), continuous measurement(CTN) and difference value measurement(DIF) available, easy to switch by pressing the MODE button. 3 Calibration Ways Under User Mode: including zero calibration, two-point calibration and basic calibration. Metric and Imperial Measuring Units: short press the UNIT button to switch between mm(metric) and mil(imperial). Wide Applications: it is widely used in the inspection field of automobile manufacturing, metal processing industry, chemical industry, commodity inspection, etc.