Features Aluminum Alloy: Made of anti-deformation and impairment-resistant aluminum alloy, ensuring long-lasting reliability for woodworking projects. Dual Scale Engraving: Laser engraved inch and metric system provide clear and scale for easy reading, accurate measurements, and markings. Convenient Center Hole: The large center hole design allows easy finger placement to securely hold the ruler in place on the workpiece, enhancing accuracy and stability. Protective Glossy Exterior: The glossy finish facilitates easy handling and movement while safeguarding delicate cutting edges from damage. Versatile 15mm Thickness: The 15mm thick design enables height and angle measurements, making it an essential and practical tool for woodworking tasks. Features: 1、The ruler is made of aluminum alloy, after oxidation treatment, anti？deformation and impairment？resistant. 2、Laser engraved inch and metric system, clear and scale, easy to read the value or make markings. 3、The large center hole design is suitable for your fingers to fix the ruler on the workpiece. 4、With glossy exterior, easy to place and move, not easy to damage the fragile cutting edge. 5、15mm thick design, suitable for height and angle measurement, is a practical tool for woodworking. Specification: Item Type: Triangular Ruler Product Color: Silver Product Material: Aluminum alloy Treatment: Oxidation Product Thickness: Approx. 15mm / 0.6in Package List: 1 x Triangular Ruler Package List 1 x Triangular Ruler