1,AUTOMATIC READING OF IRON AND ALUMINUM: Designed with dual technology, the nondestructive coating thickness gauge eliminates the guesswork of testing surface coatings by providing automatic identification of both black and non ferrous substrates 2,A VARIETY OF APPLICATIONS: Utility multifunctional meters are ideal for checking car paint thickness checkers such as used car paint, powder paint, anodized aluminum, bathroom accessories, bicycle frames, stadium seats, outdoor sheds, furniture, swings, cabinets and lockers, computers, appliances and toys 3,FOR USED CARS: Sometimes the body does a good job of hiding all the things that don't tell you the car has been in a serious crash. When buying a used car, check the car paint with the auto car paint meter to make sure the paint thickness is roughly the same on each panel 4,EASY TO READ DISPLAY: Paint depth gauge with large backlit display displays metal type, operating mode, quantity, battery status, and readings in µm, and mils units 5,WITH FITTINGS: Paint coating thickness gauge is equipped with 8 calibration films and a substrate, easy for you to install and use, complete accessories guarantees convenient operation Item Type: Coating Thickness Gauge Material: ABS Battery Type: 2 x AAA battery (LR03) Battery Capacity: 200mah (single) Measuring Range: 0-1800um 70.8mil 1.8mm Resolution (0.1um (<100um), 1um (2100um) 0.1mil 0.001mm Measurement Error: ≤150um, ±5um >150um, Zh (3 percent Hand1um Minimum Diameter of Magnetic Matrix: Approx. 12mm or 0.47in Minimum Thickness of Magnetic Matrix: Approx. 0.5mm or 0.02in Minimum Curvature Radius of Magnetic Convex Matrix: Approx. 2mm or 0.08in Minimum Curvature Radius of Magnetic Concave Matrix: Approx. 11mm or 0.43in Minimum Diameter of Non Magnetic Matrix: Approx. 50mm or 1.97in Minimum Thickness of Non Magnetic Matrix: Approx. 0.5mm or 0.02in Operating Temperature Range: -20-and40℃, it is recommended to be recalibrated in different environments, especially when the temperature difference is large Operating Humidity Range: 10 to 95 percent RH battery 1 x Coating Thickness Gauge 2 x Batteries 1 x Hanging Rope 1 x Storage Bag 8 x Test Pieces 1 x Test Piece Bag 1 x User Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.