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 25642, Cloth Belt 341D, 80 X-weight, 4 in x 132 in, Film-lok, Single-flex, 7010298930, 25 per case
3M 81356, Venture Tape White Aluminum Foil Tape 1558HT, 72 mm a 45.7 m, 5.4 mil, 7010335933
3M 45029, Diamond Grade Digital Reflective Sheeting 3924SUDS, Fluorescent Orange, 30 in x 50 yd, 1 Roll/Case, 7100282407
3M 26104, PPS Series 2.0 Adapter, Type S20, 1/8 Male, 27 Thread NPSM, 7100135929
Dynabrade 78295 3" Dia. x 6A M Medium Type R Unitized Locking-Type Disc, 25/pack
3M 27468, EMI Copper Foil Shielding Tape 1181, 1 in x 18 yd (25,40 mm x 16,5 m), 7000132169
Standard Abrasives 42699, A/O Flexible Flap Wheel 621426, 1 in x 1 in x 1/4-20 in 80, 7010369136, 10 per case
3M 62612, Scotch-Weld Threadlocker TL71, Red, 10 mL Bottle, 7100039197, 10/case
Dynabrade 54430 4" Dia. Extended Right Angle Disc Sander, Steel Housing, Rear Exhaust, .7 HP, 12,000 RPM, 3/8"-24 Thread
3M 26003, PPS Series 2.0 Adapter, Type S2c, 16 mm Female, 1.5 mmThread, 7100135338
Air Turbine Tools 2590SVF - 6mm Angle Hand Tool Series (Long Version, Front Exhaust), 30,000RPM, 35833
3M 87153, Cubitron II Depressed Center Grinding Wheel, T27 Quick Change, 9 in x 1/4 in x 5/8-11 in, 7100103313, 20 per case
Dynabrade 77768 5" Dia. x 7/8" Center Holes, 60 Grit, Z/A, Type 27, DynaCut Flap Disc w/Fiberglass, 10/pack
3M 01875, Charge-Collection Solar Tape 3011, 2 mm x 1200 m, 7010312686
3M 35083, EMI Copper Foil Shielding Tape 1181, 1/4 in x 18 yd (6,35 mm x 16,5 m), 7000132168
3M 26200, PPS Series 2.0 Lid, Standard/Large, 200 Micron Filter, 7100135626
3M 97419, Aluminum Foil Tape 3380, Silver, 48 mm x 45 m, 3.25 mil, 7000049613
3M 98235, Pro Strength Duct Tape 1210-A 1.88 in x 10 yd (48.0 mm x 9.14 m), 7000029903
3M 02090, Trizact Hookit Blending Disc 443A, 6 in, P1000 grade, 7000000539, 15 discs per carton
3M 62661, Scotch-Weld General Purpose Retaining Compound RT09, Green, 10 mL Bottle, 7100039228, 10/case
Dynabrade 78425 4-1/2" Dia. x 3/8" Coarse DynaBrite Surface Conditioning Disc, 25/pack
3M 26018, PPS Series 2.0 Adapter, Type S11, 3/8 Male, 18 Thread NPS, 7100135942
3M 45098, Roloc Disc Pad TR, Soft 1-1/2 in 1/4-20 Internal, 7000045277
Air Turbine Tools 310RDM - 1/4" Router Hand Tool Series, 25,000RPM, 33422
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 