Basic function: It can measure the thickness of non-magnetic coating on magnetic metal substrate, and the thickness of non-metallic coating on non-magnetic metal substrate. Smart Gauge: Automatically recognizes non-magnetic and magnetic metal substrates. 3 measurement modes can be switched: single measurement (SNG), continuous measurement (CTN) and differential measurement (DIF) are available, short press the MODE button to switch. Calibration operations: including zero calibration, offset calibration and basic calibration. Metric and imperial measurement units: short press the UNIT button to switch between μm (metric), mil (imperial), mm (metric) in turn. More functions: LCD display with backlight, screen flip and auto power off (1 minute). Wide range of applications: Widely used in automobile manufacturing, metal processing industry, chemical industry, commodity inspection and other testing fields. Material: ABS Unit: μm, mil, mm Measuring range: 0~1800μm/70.8mil/1.8mm Resolution: (0.1μm(150μm, ±(3%H+1μm) Minimum diameter of magnetic substrate: 12mm Minimum thickness of magnetic substrate: 0.5mm Convex magnetic substrate minimum radius of curvature: 2mm Minimum curvature radius of concave magnetic substrate: 11mm Minimum diameter of non-magnetic substrate: 11mm Magnetic substrate: 50mm Minimum thickness of non-magnetic substrate: 0.5mm Working environment: -20~40℃, 10~95%RH Power supply: 2 * 1.5V AAA batteries (not included)