Triplett CTT42 Coating Thickness Tester, is a professional tool used to measure the thickness of non-magnetic coatings on ferrous or non-ferrous metal substrates.It features smart automatic recognition for both ferrous substrates using magnetic induction and non-ferrous substrates using eddy current measurement.The kit typically includes the tester, a carrying case, calibration standards for both iron and aluminum, and AAA batteries.It offers a menu system with LCD display for viewing data, including min/max/average values, and allows for one or two-point calibration.