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?).

3M 22586, Neoprene High Performance Contact Adhesive 1357, Light Yellow, 1 Gallon Can , 7000046325, 4/case
Insize 3236-4B, OUTSIDE MICROMETER FOR LEFT OR RIGHT HAND, 3-4", 6928640382260 