Feature: Auto Reads Steel and AluminumCoating Paint thickness gauge Designed with dual technology, the non-destructive Coating Thickness Tester takes the guess work out of testing surface coatings by providing automatic recognition for both ferrous and non-ferrous substrates. A Useful, Versatile Meter for Many Applications Ideal for checking the car painting thickness checker, like used cars paint, powder coating, anodized aluminum, bathroom fittings, bike frames, stadium seats, outdoor sheds, furniture, swing sets, cabinets and lockers, computers, appliances, and toys. Automotive perform on used car, save money Sometimes body shops do a great job hiding visually everything that couldnt tell us that the car was involved in a heavy crash. Checking car paint to make sure each panel has about the same thickness of paint on it when buying used cars. Easy to Read DisplayPaint depth thickness gauge with the large Screen display shows metal type, working mode, number, battery status, and readings either in m or mils units.