COATING THICKNESS GAUGE For the non-destructive measurement of nonmagnetic coatings such as (paint, enamel, plastic, galvanizing, metalizing, plating, etc.) on STEEL. Easily measures small parts of almost any shape. Stable design with additional tail-end support. No annoying rocking during measurement. Features Permanently calibrated “V” grooves in probe housing and Gage base allow correct positioning on cylindrical objects Highly wear resistant Carbide Probe for longest life and continuous accuracy Extra rugged housing, not affected by mechanical shock, water, acid or solvents GO/NO-GO button can be pre-set for rapid measurement Explosion Proof – Refinery safe Made in the USA Supplied with NIST Traceable Calibration Certificate Model PT-GM: 0-8 mils Model PT-FM: 0-80 mils Model PT-G: 0-200 microns Model PT-F: 0-2000 microns Specifications Model GM: ±0.04 mils up to 0.8 mils ±5% of the reading over 0.8 mils Model FM: ±0.2 mils up to 4 mils ±5% of the reading over 4 mils Model G: ±1 microns up to 20 microns ±5% of the reading over 20 microns Model F: ±5 microns up to 100 microns Dimensions    8.5"L x 2"H x 1"W Warranty    1 year Material Temperature    +32° to +120° F (0 to +50° C)