Axial Model EGA06H measures nuts, bolts, screws, and fasteners from 0-28 mils. Probe measures surfaces as small as 0.08 in. dia, 0.04 in. convex, and 0.79 in. concave curvature. Using induction method according to DIN 50981, unit responds to nonmagnetic coatings including zinc, tin, chrome, copper, paint, and enamel on ferromagnetic base. It consists of measuring element, memory chip, and connector.