... .F1 probe 3.N1 probe 4.F400 probe 5.N400 probe Coating Thickness GaugeF1 probe ( Can ... . Copper, rubber, paint and etc.) on magnetic metallic base ( such as steel, iron, alloy and hard magnetic ... Copper, rubber, paint and etc.) on magnetic metallic base ( such as steel, iron, alloy and hard magnetic ... calibration : ±(3%H+1.5) Two points calibration : ±(1%H+1.5)Lower Limitation Resolution :0.1Minimum ...