F: magnetic induction : used for measuring non-ferromagnetism coating on steel ,iron etc ferromagnetism metal .Non-ferromagnetism such as lacquer,power,plastic,rubber,chromium,
zinc,plumbum,aluminium, stannum,porcelain,enamel,oxidation coating etc
N: eddy current : used for measuring coating on copper,aluminium,zinc, stannum etc . Such as enamel,rubber,paint,plastic etc.
FN : In built probe(s): included both function of F and N

Specifications

F: magnetic induction
N: eddy current
FN : In built probe(s)
Operating principle: magnetic induction/eddy current (F/N)
Measuring range:0-1250um/0-50mil
Resolution; 0.1/1
Accuracy: ±1-3%n or ±2.5um
Min. measuring area: 6mm
Min. sample thickness: 0.3mm
Battery indicator: low battery indicator
Metric/ imperial: convertible
Power supply: 4x1.5V AAA(UM-4)battery
Auto power off
Operating conditions:0-+45℃(32℉-104℉),≤90%RH
Dimensions: 126x65x27mm
weight: 81g(not including battery)
Optional accessories: other range 0-200um to 15000um