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. FEATURES When the three-blade plunger is pressed against a flat surface, the gage should read the set number stamped on the back of the indicator No setting master is necessary Internal gages will measure the largest diameter of any chamfer that has an included angle within the range of angles printed on the dial face Gages are also available with electronic indicators on request Deluxe Padded Case All ground surfaces are of hardened tool steel Indicators are AGD design SPECIFICATIONS Made in America: Yes Type: Chamfer Gage Range (in): 1/8 - 1/2" Dial Reading: For 90 -127 Degree Angles