BENETECH GM200A Film/Coating Thickness Gauge

Features 1. Measure thickness of surface coatings on metal substrates 2. Single/continuous/differential measurement available 3. Zero-point/2-point/basic calibration available 4. Metric and imperial units of measurement optional 5. Powered by 2 x 1.5V AAA batteries 6. LCD backlight 7. Auto power off Specifications 1. Measuring range: 0 - 1.80mm (0 - 71.0 mil) 2. Resolution: 0.01mm/1mm 3. Measurement error: +-0.03mm 4. Min diameter of substrate: 50mm 5. Min thickness of substrate: 0.5mm 6. Operating temperature: 0 - 40 celsius degree 7. Operating humidity: 10% - 95% relative humidity