Starrett 7"e ProSite Protractor - Engineered Plastic
|Takes error-prone calculations out of the process of miter cuts to ensure perfect miter joints every time! Simply set your miter saw to the angle that you read. Upside down or backwards, the reading is always correct. 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.
Only $29.99 at Rockler.com