Sturdy Aluminum Body: Made of sturdy aluminum alloy, the triangle ruler is strong and sturdy, with high hardness, erosion resistance and smooth surface that will not hurt your hands. Accurate Angle Measurement: With a hardened scale and permanent markings, the angle measuring tool provides accurate readings, ensuring accurate measurements down to the finest millimeter. Multiple Angle Settings: Featuring multiple fixed angles at 30°, 45° and 60°, as well as multiple drilled holes, this angle finder ruler meets various drawing needs. Practical Triangle Ruler: With this easy-to-read triangle ruler, you can effortlessly align the carpenter's square with the wood, and the recessed design makes it easy to slide for easier measurements. Versatile Functionality: This multifunctional ruler is perfect for woodworking, engineering and projects, offering both precision and convenience.