Can measure the thickness of non-magnetic coating layers on magnetic substrate, such as: (aluminum, chrome, copper, enamel, rubber, plaint) on magnetic substrate(steel, iron, alloy and magnetic stainless steel), and can measure the thickness of nonconductive coating layers covered on nonferrous substrate, such as:(ename1, rubber, paint, vanish, plastic anodic-oxide layer) covered on nonferrous substrate(aluminum, brass, nonmagnetic stainless steel) Model: cm-8820, cm-8821, cm-8822, cm-8823, cm-8825fn, cm-8825f, cm-8825n, cm-8826fn, cm-8826f, cm-8826n, cm-8829, cm-8829s. Dimensions: 160x68x32mm
