The protractor features deep etched graduations 0 - 180° in opposite directions permitting the reading of both the direct and supplementary angles.
The rule is graduated in both imperial and metric dimensions up to 150mm (6in) and a knurled thumb nut allows the rule to be locked at the chosen angle.
Specifications:
Blade Length: 150mm (6in).
Graduations: 0.5mm or 64ths
