Aluminum Miter Saw Protractor | 7-Inch Rust Proof Angle Finder Featuring Precision Laser Engraved Scales ACCURATE：Features easy-to-read precision laser engraved scales, protractor allows direct angle reading to the miter saw. Perfect for crown molding, trim work, and a variety of other carpentry applications. “O” DESIGN：Miter Saw Protractor is of “O” shape design during operation and ensures smooth & precise read on inside/outside corners, Crafted from precision CNC-machined aluminum alloy. Quality ：The Miter Saw Protractor is made of lightweight aluminum alloy, which has great corrosion and wear resistance, extending the lifespan. Also, its small size and lightweight material makes it easy to carry. Easy To Use： Whether you are a professional or not, the Miter Saw Protractor will make good effect. It is suitable for crown molding, miter cuts, carpentry, plumbing, metalworking and more.