Carpenter's ruler 90 degree 45 degree Carpenter's measuring ruler board product description: are an indispensable tool for carpenters. Whether you are designing a beam or you need a quick 45 or 90 angle measurement, the speed side is committed to providing refined, accurate and user-friendly design. Our description beam box embodies our commitment and tradition to provide measurement solutions, while our other beam boxes provide a full range of solutions to meet any measurement needs. -made of and CNC machined aluminum alloy, light weight and comfortable. Good oxidation resistance, easy to break, each ruler is thick,, and high hardness. [Permanent scale]:etching permanent scale is used to provide you with standard accuracy you need. The angle conversion table facilitates the use of correct numbers. grinding [Multi-function]: Suitable for measurement, can be used as a protractor, woodworking compass, box. The horizontal base is convenient for marking, and practical. Convenient and practical design: humanized design, easy to hang and store when in use. The edges and corners of each are polished by a special process to make them and hurt your hands. Products include: 1x Measuring tool angle ruler