The moore wright csm precision sets are supplied with a rule graduated both sides protractor head square head and centre head the datum faces are fully hardened and ground to resist wear there is a centrally mounted protractor vial allows unrestricted viewing and the protractor has full 360 scale plate graduated 0 180 0 the protractor is also fitted with a satin chrome scale plate the precision rules have been fully hardened and tempered with deeply etched graduations on both sides for