Accuracy: ?2″.
To inspect protractor, taper gage, index plate, index head and goniometer, can also be used to set angle.
Made of special alloy steel, hardness HRC64, high stability, wear resistance and easy combination.
Can be combined to any angle with interval 6 seconds after combination (6″, 12″, 18″, … , 360?).

Insize 2307-1R, REVERSE READING DIAL INDICATOR, 1", lug back, 6928640396649
Dynabrade 95745 1/4" NPT Speed Regulator
Dynabrade 95676 1/4" Female Coupler with 1/4" Male Plug Assembly 