LANDTEK CM-1210-200F Iron-based miniature Coating Thickness Gauge with magnetic Sensors measurement of steel, iron and other ferromagnetic metal substrates on non-ferromagnetic coatings, platings, CM-1210-200F Iron-based miniature Coating Thickness Gauge Measuring method F magnetic Induction, Measurement range 0~200μm, resolution 0.1μm, minimum measurement area 2mm, thinnest substrate 0.1mm.