Whether you are a professional or not, our product is excellent for you. It is suitable for crown molding, miter cuts, carpentry, plumbing, metalworking and more. ACCURATE:made of CNC precision machined aluminum alloy. With easy-to-read precision laser engraving scales, it can provide accurate angle calculations and cut with the highest accuracy (internal or external angle). Design:The internal "O"-shaped mechanical rotation enables the angle protractor to fully rotate 360 ??degrees during operation, which is easy to adjust and capture angle measurement. There is no need to worry about the marks being worn off or worn, ensuring smooth and accurate readings of the inner/outer corners. PROFESSIONAL METER PROTRACTOR:This miter saw protractor angle detector is specially designed to ensure that the correct and precise miter angle detector is obtained effortlessly. Two scales transmit your working angle directly to the miter saw to achieve accurate miter and single cut. MULTIPLE APPLICATIONS:Adjustable and foldable design, easy to use, easy to carry or store, and has one-handed operation and unique fastening mechanism for miter saw protractor. They are all your "must-haves" for finding angles quickly. They are perfect for crown molding, beveling, trimming, plumbing, and various other woodworking applications. AFTER-SALES SERVICE:Focusing on construction accessories, support our carpenter's protractor and provide you with a better choice in woodworking miter saw protractor. Buyers with any product-related questions are welcome to leave a message to us.