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?).

Insize HDT-LP200-DC, IMPACT DEVICE DC for HDT-LP200, 6940561948431
3M 88602, Wetordry Sanding Sheets 88602NA, 9 in x 11 in, 120 grit, 7100079086, 25 sheets per pack
3M 07056, Drywall Sanding Sponge CP-042, Single Angle, 2-7/8 in x 4-7/8 in x 1 in, Fine, 7100101555 