Manufactured from stainless steel, the Degree Protector comes with a semi-circular head. The head has permanent deep etched graduations, 0 to 180° in opposite directions thus permitted reading an angle directly and also its supplement. The 6″ (150 mm) blade has a graduation line on one end. The blade can be firmly set at the desired angle by means of a knurled nut.
This is an ideal tool for machinists, draftsmen and mechanics for setting bevels, transferring angles, small squaring tasks, checking cutter clearances within limits etc.