Stainless Steel & High Quality: This stainless steel marking ruler set is made of high quality stainless steel, rigid, not easy to break, durable and rust-resistant, don't worry about the metal square tool dimension will come off easily High Accuracy: Ultra-precise wood measuring tools with holes are transparent, accurate, versatile and easy to use for carpentry work, CNC machining, make marking convenient and highly efficient Wide range of uses: The metal measuring ruler is flexible and easy to use. It can write horizontal, vertical, long, short, parallel and right angle lines. It's a perfect helper for artists, architects, engineers, carpenters who make diagrams and drafts, can meet various marking needs Easy to use: our metal protractor for woodworking with a precise stop, is a combination square for marking or measuring, which is simultaneously set at each scale position. Just locate your pencil or then draw the absolute precision line you get