Accurate ScalesThe aluminum angle measuring instrument has a clear and accurate full-angle laser engraved scaleThe miter saw protractor is available in two scales: single cut and miter cut, the outer scale measures a single cut and the inner scale measures a miter cut. Great for miter cuts, single cuts, compound miter cuts, including conversion tables, protractors, and roof slopes. "O" BODY DESIGN: The mitre saw protractor is of O shape design enables the full 360 degree rotation of the saw protractor goniometer, ensuring smooth and precise reading of inner/outer angles. Precision laser-engraved scales ensure the dial is clear and easy to read directly. Material DurableThe angle finder protractor of high-quality precision CNC-machined aluminum alloy, Anti-Abrasion Anti-Corrosion Anti-Deformation Rust-Proof, good for extending the lifespan. Easy to carryMiter saw protractor weight 187g, size 18.5* 7* 2 cm. Note: Manual measurement will have a little error. The miter saw angle finder is adjustable and foldable for easy portability and storage. Wide ApplicationThe miter saw protractor is suitable for all jobs that need to measure angles. Eg: for mitre cuts, single cuts, compound mitre cuts, roof pitches and metal processing, perfect for Carpenters, Plumbers, all construction industries and more.