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?).

Standard Abrasives 725007, Buff and Blend Cross Buff HS, A/O Medium, 1 in x 3/8 in x 2 Ply x 8-32, 7000046828
Insize 0120-IM24, INDUCTIVE MOISTURE METER, 0~100%, 6974029776588
3M 20730, PPS Series 2.0 Spray Cup System UV Kit, Standard (22 fl oz,
650 mL), 125u Micron Filters, 7100128906
Standard Abrasives 725008, Buff and Blend Cross Buff HP, A/O Very Fine, 1 in x 3/8 in x 2 Ply x 8-32, 7000046829
3M 29825, Sanding Screen, 60 Grit, 20 in x NH, 7100160253 