Thick and High Quality Stainless SteelThis set of stainless steel marking ruler is made of high-quality thick stainless steel, rigid, not easy to break, durable and rustproof, don't worry about the dimension of the metal square tool will come off easily. Made of high quality aluminum alloy, wear-resistant, rustproof, durable and not easy to break. Suitable for architectural drawing design, carpentry, etc. It is a good carpenter measuring tool. High AccuracyUltra accurate woodworking measuring tools with holes are clear, precise, versatile and easy to use for carpenter's projects, CNC machining, make marking convenient and highly efficient. Wide ApplicationEngrave horizontal lines, vertical lines, long lines, short lines, parallel lines and right angle lines to meet your different marking needs. Great accessory for you Easy to UseOur metal woodworking protractor with precise stop is a combination square for marking or measuring, which is simultaneously set to each scale position, only locate your sharp pencil or draw then the absolute precision line you get.