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?).

Dynabrade 57113 Rotor/Vane Set
Insize 7341-5S, PIN GAGE HANDLE (with 1pc handle and 6 pairs of collecting bushes), .228-281", 6928640370618
Air Turbine Tools 200SV - 3mm Straight Hand Tool Series with Brake, 50,000 RPM, 32063
3M 5681, Disc Pad Holder 915, 5 in x 1/8 in x 3/8 in M14-2.0 Internal, 7000028500
3M 80102, Flexible Diamond Hand Lap 6200J, 2-1/4 in x 3-3/4 in R10 Mic, 7000082372 