Description: 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. Specifications: Measurement range: 0.0 to 2.0 mm, 0 mil to 80 mil Accuracy: 2%rdg +-0.1 mm, or 2%rdg+-4 mil Resolution:0.1 mm/1 mil Power supply: 1 x 3 V button cell, CR2032 or equivalent (Not include). Measuring technology: Magnetic Size :6.9 x 3.8 x 2 for cm How to use: 1. Probe Before measurement, place the tester with its probe firmly against surface. 2. Display 3. "TEST" button (1). Press "TEST" button to turn on the tester. Press and hold down this button for about 1 second to turn off the tester. (2). Press "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 Package included: 1 x Paint Thickness Tester 5 x Standard foils (0.10mm, 0.25mm, 0.50mm, 1.0mm, 2.0mm) 1 x Non-iron (aluminunm) base 1 x User manual