Total Length of Blade 195mm Rule Width 5.5mm Rule Thickness 1.0mm Front Face Graduations 0.5,1.0mm Rear Face Graduations 1.0mm Base Length 79mm Full range rule adjustment Readings can be fixed by means of a locknut Rules are graduated on both sides Protractor plate is graduated 0deg – 180deg – 0deg Scale resolution 1/2 degree