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 26104, PPS Series 2.0 Adapter, Type S20, 1/8 Male, 27 Thread NPSM, 7100135929
3M 01328, PSA Cloth Disc 348D, P180 X-weight, 3 in x NH, Die 300V, 7000045068
Dynabrade 91429 1/2" W x 12" L 80 Grit A/O DynaCut Belt, 50/pack
3M 26140, PPS Series 2.0 Adapter, Type S45, 1/4 Female, 19 Thread BSP, 7100135336
3M 27711, Cubitron II Roloc Durable Edge Disc 984F, 60+, YF-weight, TR, Maroon, 4914834, 4 in, Die R400BB, 7100006570, 100 per case
3M 27704, Cubitron II Roloc Durable Edge Disc 984F, 36+, YF-weight, TSM, Maroon, 1-1/2 in, Die RS150SM, 7000045168, 200 per case
3M 21543, Scotch-Brite Roloc Clean and Strip XT Pro Extra Cut Disc, TR, 2 in x NH, A XCS, 7100179815, 60/box
Dynabrade 01480 Vane Set (4pk)
3M 45031, High Intensity Prismatic Reflective Digital Sheeting 3930UDS, White, 36 in x 50 yd, 1 Roll/Case, 7100282388
3M 95725, Venture Tape Metal Building Facing Tape 1552CW, White, 72 mm x 45.7 m, 7010313505
3M 97419, Aluminum Foil Tape 3380, Silver, 48 mm x 45 m, 3.25 mil, 7000049613
3M 26003, PPS Series 2.0 Adapter, Type S2c, 16 mm Female, 1.5 mmThread, 7100135338
Dynabrade 40610 Electric Dynafile II Abrasive Belt Tool
3M 64799, Scotch-Brite EXL Unitized Mounted Point, B121 x 1/8 in 8A CRS, 3M 7010329841
3M 07053, General Purpose Sanding Sponge CP040-12-CC, Single Angle, 2-7/8 in x 4-7/8 in x 1 in, Fine, 7100101245 