Ground surfaces are of hardened tool steel. Indicators AGD design. 82 Deg Angle. Directly reads the large diameter of the countersink. Includes set master ring. Includes set master ring.
Metric Reading Dial Indicator Countersink Gage, 9-14.2" Range, 0.05mm Grad, 90 Degree Angle. Starrett Countersink Gages are offered in three different angles so that the gage sets on the angular side of the countersink, as opposed to a chamfer gage which sets on the top edge of the chamfer. 9-14.2mm Range, 90 Deg Angle with Case.