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 26015, PPS Series 2.0 Adapter, Type S8, 12 mm Male, 1.0 mm Thread, 7100135931
3M 55656, Stikit Film Disc w/Tab 375L, P240, 5 in x NH, Die 500X, 7100106552, 250 per case
3M 08749, High Bond Rearview Mirror Adhesive, 0.02 fl oz, 7010364470, 12 per case
Insize 6144, ACCESSORY SET FOR DIGITAL CALIPERS, 6928640380839
Dynabrade 97571 1/2" NPT Male Safety Coupler
Dynabrade 94980 1/4" Composite-Style Coupler, 1/4" Male
Dynabrade 97568 3/8" NPT Female Safety Coupler
Dynabrade 98270 1/2" Male Coupler
3M 97419, Aluminum Foil Tape 3380, Silver, 48 mm x 45 m, 3.25 mil, 7000049613
3M 65883, Adhesive Transfer Tape 950, Clear, 48 in x 60 yd, 5 mil, 7000001189
3M 65491, Pro Grade Precision Ultra Durable Universal Hole Sanding Disc DUH5220TRI-10I, 5 inch UH, 220, 7100202878, 10 per pack
Dynabrade 95675 1/4" Male Plug with 1/4" NPT Male Thread
Air Turbine Tools 201DM - 3mm Straight Hand Tool Series with Brake, 50,000 RPM, 32157
Standard Abrasives 726027, A/O C1 Straight Precision Cartridge Roll, 1/2 in x 2-1/2 in x 1/4 in 180, 7100098750
Dynabrade 98269 1/2" Female Coupler 