1500um Handheld Coating Thickness Gauge Tester Automobile Paint Thickness Measuring Instrument Item Type: Coating Thickness Gauge Material: ABS Color: As shown in the picture Power Supply: AAA 1.5V x2 (not included) Application: Measurement of coating thickness Probe F Probe N Principle Magnetic induction Eddy current Scope 0~1500um 0~59.1mil 0~1500um 0~59.1mil Accurate Value ±(3%+2um) ±(3%+0.08mil) ±(3%+2um) ±(3%+0.08mil) Resolution 0.1um/0.01mil 0.1um/0.01mil Calibration Zero/multipoint Unit um, mil Minimum radius of curvature convex 1.5mm / 0.06in Minimum radius of curvature concave 25mm / 0.98in Minimum measurement area Diameter 6mm / 0.24in Minimum thickness of substrate 0.5mm (0.02in) 0.3mm (0.012in) Working environment Temperature: 0~40℃ (32~104℉) Humidity: 20%~90%RH