5 in 1 Triangle Ruler: There are five practical functions of the triangle ruler: 1. Draw parallel lines; 2. Measure angle 0 to 90; 3. The pivot point of angle measurement 4. Helps draw by moving the square; 5. Helps drill (diameter 3-15 mm). Convenient for your daily life and work. And the triangle ruler is a multi-function tool that makes woodworking and framing easier. High Quality: The combination angle is made of aluminum alloy, which is not easy to rust or break. Very strong and durable. The aluminum alloy triangle ruler is durable and has smooth edges. Ideal for carpentry, DIY, and more. Metric Scale: The metric scale allows you to take precise measurements in millimeters, minimizing errors and increasing efficiency. High Accuracy: Our carpenter's square guarantees reliable and accurate measurement to ensure your projects are perfectly executed. Multipurpose: Perfect for stop squares, angle measurements, and layout work, a must-have tool for carpenters and DIY enthusiasts.