Starrett 684M-2Z Millimeter Reading Internal Chamfer Gauge With Yellow Dial, 90-127 Degree Angle, 0-12.7mm Range
All ground surfaces are of hardened tool steel
Indicators are AGD design
Internal gauges will measure the largest diameter of any chamfer that has an included angle within the range of angles printed on the dial face of the gauge
Gauges furnished in deluxe padded case
Details: These gauges directly measure the diameter of chamfered holes. No setting master is necessary. When the three-blade plunger is pressed against a flat surface, the gauge should read the set number stamped on the back of the indicator. In case of wear, the gauge may be adjusted to read the proper number.