Faithfull Prestige Mitre Saw Protractor Black AluminiumThe Faithfull Prestige Mitre Saw Protractor is a modern and accurate way to measure internal and external wall angles. This measurement is commonly used to transfer angles to mitre saws but could also be used as a datum point for hand cutting. Manufactured using CNC machining from heavy duty aluminium. It is then black anodised for protection and laser etched for accuracy.