Feature: 1. Aluminum Alloy: This woodworking triangle ruler is made of aluminum alloy die casting, which has excellent oxidation resistance, rust resistance, high hardness, no breakage, and long service life. 2. Clear Scales: The triangle has a matte finish to prevent dazzling. The laser etching scale provides you with high accuracy and readability, and greatly improving the measurement efficiency. 3. Versatile Usage: The metal rafter ruler can be served as a protractor, saw guide, woodworking compass, triangle ruler, and frame ruler, suitable for various home renovation and woodworking projects. 4. Easy to Use: With exquisite workmanship, this rafter square has flat tangents, so you can easily make the ruler level with the wood, forming a straight or diagonal line proportional to the edges of the wood. 5. Safe and Practical: This metal triangle ruler has a simple structure and lightweight design, and can be hung and stored when not in use. With glossy and flat appearance, and does not harm your hands. Specification: Item Type: Woodworking Triangle Ruler Material: Aluminum Alloy Measuring Length (Metric): 17.78cm (7 Inch). Package List: 1 x Woodworking Triangle Ruler Note: There is a slight error in size.