Feature:1. The color screen display and a variety of backlight colors, blue, orange, red, purple, green, and gray six background colors, can be clearly read.2. 2 measuring methods: single measurement & continuous measurement, 3 calibration modes: basic setting, offset, zero calibration.3. 1500 data storage, 100 independent arrays, each group can store 15 data for easy reviewing and data analysis at any time.4. Fully automatic fourway rotating screen can be easily read in any position, convenient and practical.5. It is a portable thickness tester with high resolution display. It is a good helper for detecting secondhand cars to identify accidental car.Specification:Item Type: Coating Thickness GaugeMaterial: ABSColor: As shown in the pictureMeasuring range: 0-1800um/0-70.9milResolution:(0.1um(<100um), 1um(100um)0.1mil/0.001mmMeasurement error:150um,5um>150um, (3%+1um)Minimum Diameter of Magnetic Metal Substrate: 12mm/0.47inMinimum Thickness of Magnetic Metal Substrate: 0.5mm/0.02inMinimum Curvature Radius of Magnetic Convex Substrate: 2mm/0.08inMinimum Curvature Radius of Magnetic Concave Substrate: 11mm/0.43inPower Supply: 3x1.2V AAA dry battery (not included) or 5V 1A adapter (not included adapter plug)How to Use1: Install the battery 3x1.2VAAA dry battery (not included).2: Adjust to the calibration mode and place the calibration sheet on the iron base for calibration.3: After calibration, select the measurement mode for measurement..Package List:1 x Coating Thickness Gauge(Battery Not Included)1 x USB Cable1 x Cloth Bag6 x Calibration Sheet1 x Iron Base1 x Storage Plastic Bag2 x Cotton Pad1 x Portable Tool Box