Lightweight Aluminum Alloy​ : Made of lightweight aluminum alloy , the protractor is wear resistant and enduring . Its compact and portable design makes it easy to carry around , meeting the requirements of various work scenarios 360 Degree Rotation​ : Equipped with a reinforced O ring , the protractor has a practical torque adjustment function . It enables smooth and seamless 360 degree rotation , adapting to various angle measurement needs Precision Engraved Scales​ : This protractor features clear , easy to read precision engraved scales . It allows you to directly read the exact angle values of the miter saw , ensuring accurate measurements for woodworking tasks Stable Angle Lock with Wing Screws​ : Quickly lock angles with wing screws for firm and reliable fixation . Even during marking or drilling work , it ensures stable angles without slipping , providing solid support for your manipulation Convenient and Efficient : Whether handling crown molding details , various trimming tasks or other complex woodworking projects , it is a practical assistant in the woodworking field . It brings convenience and precision to your work, Manufacturer: PATNFR