This tester is designed to not-destructively measure the thickness of non-metal coatings (including paint, enamel, plastic, epoxy, etc) on iron, steel or aluminum. Features: Mainly used to non-destructively measure the paint thickness of car coating. Measuring range is 0.0 to 2.0mm or 0 to 80 mil. Two units available: mm/mil. Automatic calibration. Data hold. Mini size with LCD display. Easy to operate and use. Press Buttons Function: 1.Probe Measuring probe of the tester. Before measurement, place the tester with its probe firmly and in a right angle against the surface to be tested. 2.Display 3.TEST Button a. Press this TEST button to turn on the tester. Press and hold down this button for about 1 second to turn off the tester. b. Press this TEST button to delete the reading on the display, the display will show '--' 4. UNIT Button Press this UNIT button to select desired unit: mm or mil. Specification: Condition: 100% Brand New Material: ABS Color: Black Measuring Range: 0.0mm~2.0mm, 0mil~80mil Accuracy: 2%rdg0.1mm, or 2%rdg4mil (Note: Accuracy is guaranteed at the operating temperature of 235 and relative humidity of not more than 75%.) Resolution: 0.1m/1mil Power Supply: 3V button cell, CR2032 or equivalent, 1 piece(Batteries are not included) Operating Environment: Temperature: 0 to 40, Relative Humidity: 80% Temperature Coefficient: 0.05 X(2%rdg0.1mm, or 2%rdg4mil)/(18 or 28 Storage Environment: Temperature: -10 to 50, Relative Humidity: 80% Size: Approx. 6.8*3.8*2cm/2.68*1.5*0.79in Weight: Approx.60g/2.1oz Package List: 1 * Paint Thickness Tester(Batteries Not included) 1 * Pack of Small Accessories Package List 1Mainly used to non-destructively measure the paint thickness of car coating 2Measuring range is 0.0 to 2.0mm or 0 to 80 mil 3Two units available: mm/mil 4Automatic calibration. Data hold 5Mini size with LCD display. Easy to operate and use