coating thickness gauge

Fe type (CM8801F) is applicable for nonmagnetic coatings on ferromagnetic substrates, e.g., zinc,chromium, copper, tin, or paint,plastics, enamel on iron or steel.A symbol Fe is displayed on the screen; NFe type (CM8801N) is applicable for electrically non-conductive coatings on non-ferrous metals, e.g., paint, enamel, or plastics on aluminum, brass, or zinc and anodic coating on aluminum.A symbol NFe is displayed on the screen; 2 in 1 type(CM8801 FN) combines two probes in one meter and automatically identify the substrate materials.Depending on the substrate, the symbol Fe or NFe is displayed on the screen.