COATING THICKNESS GAUGE This compact & handy Professional Gauge is designed for non-destructive, fast and highly accurate/ precise coating thickness measurement. The principal aplications lie in the field of corrosion protection. Ideal for manufacturer, offices & specialist advisers, paint shops & electroplaters, chemical, automobile, shipbuilding and aircraft industries including light & heavy engineering. Specifications:  Sensor Probe: F, No Fe  Working Principle: F: Magnetic induction; NF: Eddy current principle  Measuring Range: 0 to 1250 micrometer, 0 to 49.21mils  Guaranteed Tolerance (of reading): 0 - 850 micrometer: +/-3 percent + 1 micrometer (F)/1.5 micrometer (NF), 850 - 1250 micrometer: +/-5 percent; 0 - 33.46mils: +/-3 percent + 0.039mils (F)/0.059mils (NF), 33.46 - 49.21mils: +/-5 percent  Precision: 0 - 50micrometer: 0.1 micrometer, 50 - 850micrometer: 1 micrometer, 850 - 1250 micrometer: 0.01mm; 0 - 1.968mils: 0.001mils, 1.968 - 33.46 mils: 0.01mils, 33.46 - 49.21mils: 0.1mils  Minimum curvature radius: F: 1.5mm; NF: 3mm  Minimum area diameter: F: 7mm; NF: 5mm  Minimum substrate thickness: F: 0.5mm; NF: 0.3mm  Item Size: 110 x 50 x 23mm Package include: 1 Coating Thickness Gauge 5 Calibration Foils 1 Aluminum Substrate 1 Iron Substrate 1 USB Cable 1 Software CD 2 1.5V AAA Battery 1 User Manual 1 Small Storage Box