The ElektroPhysik 80-137-1600 MiniTest 735 Coating Thickness Gauge N0.3M Straight Micro Sensor, Non--Ferrous Metals, 12 Mils / 304 Microns is the solution to all your coating thickness problems where a reliable finish and perfect product appearance play a major role for long-term value and success, e.g. in the automotive and shipbuilding industry, steel- and bridge construction or in the electroplating industry, to name a few industries.