The coating thickness gauge is designed for the safe measurement of paint or coating thickness on metal surfaces. For use on either steel or aluminium metal surfaces with flat or curved profiles.Auto detection of base material: ferrous (steel, etc) and non-ferrous (aluminium, copper, etc) metals. Applications include: automotive bodywork, commodity inspection, manufacturing. Ideal for both workshop & outdoor use. Contents include: 2x calibration base (F/NF), 5 x standard calibration foil.