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 86803, Cubitron II Stikit Film Disc 775L, 120+, 5 in x NH, Linered w/Tab, Die 500X, 7100045865, 250 per case
Dynabrade 94992 1/4" Male Composite-Style Coupler with 1/4" Male Plug Assembly
Insize 7126-6, RIGID RULE, 6", 6928640385186
3M 01003, Scotch-Weld EPX Mixing Nozzle, Square Green, 48.5mL and 50mL, 7100148765
3M 26128, PPS Series 2.0 Adapter, Type S33, 1/8 Female, 27 Thread NPT, 7100135950
3M 26130, PPS Series 2.0 Adapter, Type S35, 16 mm Female, 1.5 mm
Thread Stretched, 7100135926
3M 37001, Combination Dual Airline Back-Mounted Breathing Tube SA-2600/37001(AAD), 7000002044, 1 EA/Case
3M 26116, PPS Series 2.0 Adapter, Type S25, 1/4 Female, 19 Thread BSP, 7100135957
3M 55656, Stikit Film Disc w/Tab 375L, P240, 5 in x NH, Die 500X, 7100106552, 250 per case
3M 95725, Venture Tape Metal Building Facing Tape 1552CW, White, 72 mm x 45.7 m, 7010313505
3M 80176, Cloth Belt 777F, 50 YF-weight, 6 in x 48 in, Film-lok, Single-flex, 7010307734, 20 per case
3M 26022, PPS Series 2.0 Adapter, Type S12, 10 mm Male, 1.0 mm Thread, 7100135943
3M 93949, General Purpose Sanding Sponge CP040-3PK, Single Angle, 2-7/8 in x 4-7/8 in x 1 in, Fine, 7100175194, 3/pack 