EM2271A Mini LCD Digital Car Paint Thickness Gauge Tester Coating Thickness Gauge Testing InstrumentFeatures:, Improved EM2271. It can measure Fe&NFe. Accuracy improved 10, measuring range extended, resolution higher, better cost-effective. For measurements in automatic test mode and on a steel substrate object. Specifications:Model Number: EM2271Z Measuring Range: 0.00-2.20mm Power: 1 x CR2032 Battery (Not Included)Note:±(10% Reading + 0.10mm),Most cars are made of steel, and if you get the result of 0.00mm or 0.01mm, it is a normal condition, accpetable error, because most cars paint thickness is 0.1-0.15mm. Package Included:1 x Paint Thickness Tester5 x Standard Foils (0.10mm, 0.25mm, 0.50mm, 1.0mm, 2.0mm)1 x Non-Ferrous Base (Aluminum)1 x User Manual