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 4168-10E, STEEL STANDARD BALLS, 3/8", 6940561981483
Dynabrade 15101 Tension Arm (for Mini Dynafile II)
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Dynabrade 11395 Guide Wheel 