Positest® Magnetic Coating Thickness Gauge / Banana Gauge (FM)The Positest coating thickness gauge is designed 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