1AUTOMATIC 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 2A 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 3FOR 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 4EASY TO READ DISPLAY: Paint depth gauge with large backlit display displays metal type, operating mode, quantity, battery status, and readings in m, and mils units 5WITH 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