GZ01224 | Groz Deg. Protractor Rectangular Head 150mm Blade * Manufactured from stainless steel the Degree Protractor comes with a semi-circular or a rectangular head. * The head has permanent deep etched graduations 0° to 180° in opposite directions thus permitting reading an angle directly and also its supplement. * The 150 mm blade has a graduation line on one end that permits accurate setting and reading of angles. 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. * The rectangular head provides additional convenience as it incorporates 4 working edges. * Angular Tolerance: 0.5° Specification * Head Shape: Rectangular * Blade Length: 150mm