Ideal measuring tool: The paint thickness gauge can accurately measure the thickness of non-metallic paint over metal. Easy to read: The paint thickness tester uses a digital LCD display, automatic calibration, and clear readability. Advantages: Easy to operate, automatically turns off if not operated for 1 minute, fast measurement, safe to use, and portable. Measuring range: Measures 0~1.80mm/0~71.0mil of non-metallic paint on a metal surface. Two units MM/Mil are available and can be switched.