This unit is designed to not-destructively measure the thickness of non-magnetic coatings (including paint, enamel, plastic,epoxy, plating, galvanizing, etc) on steel or iron.
The car paint thickness gauge with its integrated test sensor will answer these questions immediately, no matter whether the car is made from steel or aluminium. You can accurately test the paint thickness on both types of metal.
3 LEDs show any irregularties in the paint thickness