Generic Portable Mini Digital Coating Paint Thickness Gauge Meter Tester Car Painting Measuring Range: 0.0mm~2.0mm / 0mil~80mil Temperature Coefficient :0.05x(2%rdg 0.1mm, or 2%rdg 4mil)/C(&lt;18C or &gt;28C) Resolution : 0.1mm/1mil Operating Environment : Temperature : 0C to 40C / Relative Humidity : &lt; 80% Accuracy : 2%rdg 0.1mm, or 2%rdg 4mil **note: Accuracy is guaranteed at the operating temperature of 23C 5C and relative humidity of not more than 75%.