Carpenter's ruler 90 degree 45 degree Carpenter's measuring ruler board product description: Rafters are an indispensable tool for carpenters. Whether you are designing a beam or you only need a quick 45 or 90 angle measurement, the speed side is committed to providing the most refined, accurate and user-friendly design method. Our description beam box embodies our commitment and tradition to provide high-quality measurement solutions, while our other beam boxes provide a full range of solutions to meet any measurement needs. High quality-made of precise and durable CNC machined aluminum alloy, light weight and comfortable. Good oxidation resistance, not easy to break, each ruler is thick, corrosion resistant, and high hardness. [Permanent scale]:etching permanent scale is used to provide you with the most standard accuracy you need. The angle conversion table facilitates the use of correct numbers. Smooth grinding [Multi-function]: Suitable for measurement, can be used as a protractor, woodworking compass, square box. The horizontal base is convenient for marking, smooth and practical. Convenient and practical design: humanized design, easy to hang and store when not in use. The edges and corners of each are polished by a special process to make them smooth and not hurt your hands. Products include: 1x Measuring tool angle ruler