Features High Accuracy Ruler: Fine CNC machining and clear engraving ensure 0.1mm processing accuracy and ±0.004° angle accuracy. Easily mark 45° and 90°. The 1/16in hole design ensures parallel line marking. Square Layout Protractor: Quickly mark fixed angles of 22.5°, 30°, 45°, 60°, 67.5°, 75°, 90°. The locating pin allows for rapid angle setting. Hole spacing of 1/16 inch facilitates parallel line drawing and mortise marking. Versatile Design: The 0.8mm hole diameter accommodates most woodworking pencils for marking and measuring. Made of premium alloy material with multiple polishing processes for a glossy appearance. Sturdy Construction: The woodworking square protractor is made of excellent aluminum alloy, which ensures good durability and wear resistance, making it a long lasting tool for woodworking projects. Multifunctional Tool: for woodworking projects, this triangular ruler is designed for high accuracy measurement and marking. Suitable for DIY enthusiasts, carpenters, and professionals alike. Spec: Item Type: Woodworking Triangular Ruler Material: Aluminum Alloy Package List: 1 x Woodworking Square 1 x Right Angle Ruler 1 x Locating Pin 1 x Wrench 2 x Screws Package List 1 x Woodworking Square 1 x Right Angle Ruler 1 x Locating Pin 1 x Wrench 2 x Screws