Paul N. Gardner Co., Inc.:  The TQC Surface Profile and Coating Thickness Gage is a combination gage that can be equipped with two different tips, one for surface roughness and another for coating thickness. Complete with two tips and a glass calibration plate, it has a range of 0-3.4 mm/0-0.13 inch, a resolution of 1?μm/0.04 mil, accuracy of ±5 μm/0.2 mil, thread of M2.5 x 0.45 and a stem diameter of 8 mm/0.3 inch.
Call 800/762.2478.