Feature: 1. Aluminum Alloy: Made from solid aluminum alloy, this triangular angle ruler is built to last. Its high hardness, erosion resistance, and glossy polished finish make it user friendly and portable. 2. Easy Leveling: The built in level allows you to effortlessly level your protractor against the wood. The embedded level makes sliding for measurements easier, adding to its practicality and versatility. 3. Accurate Markings: The square construction with clear, accurate graduations and permanent etched markings ensures maximum readability, and long lasting use. It measures to the finest millimeter. 4. Multiple Angle Measurement: With multiple fixed angle stops at 30 degree, 45 degree, 60 degree and numerous angle holes, this woodworking angle ruler caters to diverse marking and measuring needs. 5. Versatile Tool: This right angle ruler protractor can be applied for various woodworking projects, including measuring, marking, transferring angles, and squaring stock, convenient and practical. Specification: Item Type: Angle Ruler Material: Aluminum Alloy Guiding Ruler Thickness: Approx. 22mm / 0.87in (This is the thickness of the straight part of the ruler, not the thickness of the entire item) Ruler Body Thickness: Approx. 2.3mm / 0.09in. Package List: 1 x Angle Ruler