... non-magnetic substrate.Such as: enamel,rubber, paint, plastic powder,synthetic materials,anodic-oxide layer on copper,aluminum, ... may need to buy RS-232C data cable purchase )Model+USBStandard configuration+Data communication via USB data lines and computerModel ... Paint coating thickness meter AC-112C Package:Coating thickness gauges model :Other products :AM-AMITTARI PRODUCTS:thickness meters ,hardness ...