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 77559, Cubitron II Hookit Cloth Disc 784F, 77559, 36+ to 120+, 5 in x NH, Die 500X, 7100232738
Insize 6144, ACCESSORY SET FOR DIGITAL CALIPERS, 6928640380839
3M 70994, Scotch-Weld Acrylic Adhesive DP8410NS, Green, 45 mL Duo-Pak, 7100024055,12/case
3M 81449, Scotch-Weld EPX Mixing Nozzle for DP2216, Helical White, 43 mL, 7100034271
3M 05067, Cubitron II Stikit Film Disc 775L, 400+, 6 in x NH, Linered w/Tab, Die 600Z, 7100145474, 250 per case
3M 28216, Cubitron II Roloc Disc 984F, 36+ YF-weight, TR, 3 in, Die R300V, 7010361117
Dynabrade 95675 1/4" Male Plug with 1/4" NPT Male Thread
Dynabrade 78597 3/8" Dia. x 1-1/2" W x 1/8" Center Hole, 180 Grit, 100/pack
Dynabrade 95745 1/4" NPT Speed Regulator
3M 50010, VentureClad Insulation Jacketing Tape 1577CW-WME, White, 99 mm x 13.7 m, 7010379907
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 