Starrett 7″ ProSite Protractor – Durable Aluminum

Takes error-prone calculations out of the process of miter cuts to ensure perfect miter joints every time! Easy-to-use tool has two scales: red scale and arrow show the angle for a miter joint, while the black arrow and scale provide the angle to fit a single workpiece to an angle. Simply set your miter saw to the angle that you read. Upside down or backwards, the reading is always correct. Durable aluminum with Teflon™ O-ring for smooth and positive operation.