Features a protractor scale. Good oxidation resistance, not easy to break, each triangle ruler is thickened, - and high hardness. Also useful for hobbyists, home builders, manufacturers, DIY lover & artists Use as saw guide for angle measurements and cuts.Suitable for the measurement, rafter square can be used as a protractor, woodworking compass, triangle square and frame square. The horizontal base is convenient for marking, smooth and practical. Strong cast aluminum body, with clear and accurate scale, convenient to read value. Rafter square is convenient to hang and store when not in use with humanized design. The edges and corners of each triangle are polished by special craftsmanship, so that it is smooth and does not hurt your hands. perfect for all building and remodeling projects.Is convenient to hang and store when not in use with humanized design. The edges and corners of each triangle are polished by special craftsmanship, so that it is smooth and does not hurt your hands. Colour:Silver Material:Aluminum alloy Package Contents: 1 x triangle ruler Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.