... probe 3.N1 probe 4.F400 probe 5.N400 probe Coating Thickness GaugeF1 probe ( Can match with MT2100,MT3100,MT4100 ... measure the all electrically insulating coating layers thickness (such as lacquer,Varnish, paint,anodizing) coating on non-ferrous metals (such ... measure the all electrically insulating coating layers thickness (such as lacquer,Varnish, paint,anodizing) coating on non-ferrous metals (such ...