... magnetic substrate.Such as: (enamel,rubber,paints,plastics,copper,aluminum,zinc,tin,power,synthetic materials,Phosphide layer,Lead,tin, ... .Such as: enamel,rubber, paint, plastic powder,synthetic materials,anodic-oxide layer on copper,aluminum,zinc,tin,non-magnetic stainless ... built 5.Calibration foils 6.Substrate (Iron) 7.Substrate (Aluminum) Optional accessories: 1.Bluetooth 2.USB adaptor for RS- ...