High-quality materials: made of high-quality aluminum alloy, high hardness, anti-rust, anti-collision, wear resistance, strong stability, not easy to break, and durable. Exquisite design: simple and stylish appearance, more convenient storage. The thick non-slip design ensures easy handling, proper size and finger protection. Easy to use: There are dents on the surface of the ruler to make the characters clearer. The rough edge of the saw can be directly used to cut the saw, so that the cut can be easily and accurately marked on the circuit. Multi-function: The triangle ruler can be used as a protractor, center point, ruler, saw, picture and ruler frame, and provides multiple functions. Wide range of applications: The protractor is also suitable for hobbyists, engineers, carpenters, framing, roofers, interior designers, manufacturers, interior designers, and artists. It is an ideal choice for all construction and decoration projects.