SMART SENSOR Digital Paint Coating Thickness Gauge Handheld Coatings Thickness Tester with Auto Function Fe/NF Probe Car Detector Automotive Coating Refinishing Cars Paint Tester Meter (0～1700um) This coating thickness gauge is used to measure the thickness of the plated and coated sheet on metal, e.g. paint/enamel/ chrome on steel, paint and anodizing coating on aluminum/copper, with the function of backlight large LCD display and detecting the metal properties automatically. This Coating Thickness Tester is perfect for manufacturing company, metal machinery industry, chemical industry and commodity inspection especially automobile trading. Specifications:     Material: ABS Plastic Sensor Probe Type: Fe / NFe Working Principle: Magnetic Induction(Fe) / Eddy Current(NFe) Range: 0～1700um, 0～67.8mil Units: μm, mil Accuracy: ±(1.8%um±2um)(0-499um), ±(2.2%um±2um)(499-1700um) Resolution: 0.1um(0-99um), 1um(100-1700um), 0.1mil Minimum Curvature Radius: Convex 5mm, Concave 30mm Minimum Measuring Area: 25x25mm Minimum Thickness of Substrate: Magnetic 0.2mm, Non-magnetic 0.05mm Data Storage: 20 Groups Function: LCD Backlight Display, Low Battery Indicator, Zero Calibration, Basic Calibration, Auto Power Off, Max/Min/Average Value, Data Hold, Unit Selection Auto Calibration: According to 5 different calibration plates of 0, 50, 100, 250, 500 Operation Temperature: 0～50℃ Power Supply: 2 * 1.5V AAA Batteries(NOT Included) Storage Box Size: 210 * 175 * 40mm / 8.3 * 6.9 * 1.6in Item Size: 50 * 30 * 120mm / 2.0 * 1.2 * 4.7in Item Weight: 74g / 2.6oz Package Weight: 431g / 15.2oz Package Size: 22.5 * 18.5 * 4.8cm / 8.9 * 7.3 * 1.9in