The TG-600 by Leader Precision Instrument Co is a coating thickness measuring instrument which comes with a separate probe and auto power off function. For its operation principle, it uses a magnetic induction and eddy current which has a measuring range of about 0 to 1250 μm and 0 to 50 mil. For other technical features, it comes with a resolution of 0.1μm/1μm and an accuracy of ±1～3%N or 2.5μm . The unit comes with a power supply that uses AAA battery having a 4×1.5V. The whole unit has a dimension of 126 x 65 x 27 and has a weight of about 82 kg. The whole package of the unit comprises of F type probe, N type probe, F calibration base set, N calibration base set, Calibration foil set, Carrying case and 1.5V AAA battery.