Types & FunctionTG-2100F (for Ferrous substrate)TG-2100N (for Non Ferrous substrate)TG-2100FN (2 in 1, F & NF type)SpecificationsOperating principle : Magnetic Induction/Eddy Current (F/NF)Measuring range : 0 - 5000um/0 - 50milResolution : 0.1/1Accuracy : ± 1 - 3%n or ±2.5umMin. measuring area : 6 mmMin. sample thickness: 0.3 mmBattery indicator : Low battery indicatorMetric/ imperial : ConvertiblePower supply : 4 x 1.5V AAA(UM-4)batteryAuto power offOperating conditions : 0 - 45℃(32℉-104℉), ≤90%RHDimensions : 126 x 65 x 27 mmWeight : 81 gram (not including battery)Optional accessories : Other range 0-200um to 15000umApplication:1. TG-2100F can measure the thickness of non-magnetic coating layers (aluminum, chrome, copper, enamel, rubber, paint) on magnetic substrate (steel, iron, alloy and magnetic stainless steel)2. TG-2100N can measure the thickness of non-conductive coating layers (enamel, rubber, paint, vanish, plastic anodic oxide layer) covered on non-ferrous substrate (aluminum, brass, zinc, tin and non-magnetic stainless steel)Standard Delivery of TG2100FN:Main unit (5000um) 1F type probe 1N type probe 1F calibration base set 1N calibration base set 1Calibration foil set 1 set (4 foils)Carrying case 1Instruction manual 1