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 50730, PPS UV Standard Lid & Liner Kit, Standard (22 fl oz, 650
mL), 125 Micron Filters, 7100067511
3M 26001, PPS Series 2.0 Cup, Standard (22 fl oz, 650 mL), 7100134653, 2 Per Carton
3M 95179, High Strength Small Hole Repair, 16oz, SHR-16-BB, 7100203773
Dynabrade 78591 3/8" Dia. x 1" W x 1/8" Center Hole, 80 Grit, 100/pack
3M 26106, PPS Series 2.0 Adapter, Type S22, 8 mm Male, 0.75 mm Thread, 7100135958
3M 19765, Utility Cloth Sheet 314D, 9 in x 11 in P280 J-weight, 7000000353
Dynabrade 92115 1/2" W x 12" L 220 Grit A/O DynaCut Belt, 50/pack
3M 01335, PSA Cloth Disc 348D, 40 X-weight, 3 in x NH, Die 300V, 7000118878
3M 54349, PELTOR Welding Hygiene Kit HY505, for Welding Earmuffs, 10 EA/Case, 7000103822
3M 03140, General Purpose Sanding Sponge CP041-6P, Single Angle, 2-7/8 in x 4-7/8 in x 1 in, Medium, 7100101537, 6/pack 