... BS. 1.Productin Name:F&NF Type Coating Thickness Gauge(CM-8856FN)It meets the standards of ... The F probes measure the thickness of non-magnetic materials (e.g. paint,plastic, porcelain enamel, copper, ... nickel etc.) . often used to measure the thickness of galvanizing layer, lacquer layer,porcelain enamel layer, ... u s e d o n anodizing, varnish, paint, enamel,plastic coatings, powder, etc. applied to ...