premium aluminum alloy,, wear resistant and The Triangular metric ruler can be used as a protractor, miter, line scriber guide, framing square and a ruler, for ideal for all building and remodeling projects Its thick edge can be used directly with the against the square for cross cuts or angled cuts using the etched protractor scale, let you quickly and accurately your cut lines on your stringers You will get Triangular ruler, which features metric measurements with clear, enough for all building and remodeling projects, also woodworking hobbyists, artists & lover The Triangular ruler checking angles is quick and easy with clear and accurate scale, easy for you to read a wider base that provides stable grip on, Manufacturer: Tsophreniq