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 41554, Hi-Strength 90 Cylinder Spray Adhesive, Clear, Large Cylinder (Net Wt 28.8 lb), 7000028603
Insize 6300, MICROMETER STAND, 6928640307294
3M 81356, Venture Tape White Aluminum Foil Tape 1558HT, 72 mm a 45.7 m, 5.4 mil, 7010335933
3M 5680, Disc Pad Holder, 3M 915, 5 in x 1/8 in x 3/8 in 5/8-11 Internal, 7000120889
3M 35083, EMI Copper Foil Shielding Tape 1181, 1/4 in x 18 yd (6,35 mm x 16,5 m), 7000132168
3M 91756, Performance Paint Prep Respirator N95 Particulate, 8110SP20-DC, Size Small, 7100159321, 20 Each/Pack
3M 13180, Scotch-Brite Multi-Finishing Wheel, MU-WL, 2S Medium, 6 in x 3 in x 1 in, 7000148248
3M 01302, Scotch-Brite Cut and Polish Flap Brush, 12 in x 1 in x 5 in 7A MED, 7100054509
3M 38397, High Strength Small Hole Repair Kit, SHR-KIT, 7100203779
3M 26135, PPS Series 2.0 Adapter, Type S40, Trapezoidal Thread, 7100135335
Dynabrade 78594 3/8" Dia. x 1-1/2" W x 1/8" Center Hole, 60 Grit, 100/pack
3M 17251, Versaflo Economy Hood, S-403S-20, Small/Medium, 7000127463, 20 EA/Case
3M 55722, Stikit Film Disc 375L, 6 x NH P1000 w/Skipslit Liner, 7100075240, 250 per case
3M 51033, Roloc Disc 361F, 36 YF-weight, TSM, 3 in, Die RS300VM, 7000148150
3M 01875, Charge-Collection Solar Tape 3011, 2 mm x 1200 m, 7010312686
3M 86802, Cubitron II Stikit Film Disc 775L, 80+, 5 in x NH, Linered w/Tab, Die 500X, 7100048736, 250 per case
Air Turbine Tools 310RSV - 6mm Router Hand Tool Series, 40,000RPM, 33441
3M 02090, Trizact Hookit Blending Disc 443A, 6 in, P1000 grade, 7000000539, 15 discs per carton 