3D Aluminum Alloy Protractor and Ruler Crafted from quality aluminum alloy with exceptional hardness, toughness, scratch resistance, and corrosion resistance. Built to last and outperform common plastic rulers. Precision laserengraved 3D bevel angle scale ensures quick and accurate measurements. Minimum measurement unit is 1 millimeter with minimal margin of error, providing reliability for detailed tasks. Doublesided scale design with clear, easytoread markings enhances visibility and speeds up workflow. Versatile 3D protractor functionality allows measuring, marking, and drawing both parallel and perpendicular lines with ease. Supports angle measurements from 22.5 degrees to 90 degrees, including preset angles of 22.5°, 30°, 45°, 60°, 67.5°, and 75°, ideal for a wide range of applications. Use Scenarios: 1. Carpentry and woodworking – accurately measure and mark cuts for furniture building, cabinetry, and framing. 2. DIY home projects – quickly set precise angles for shelves, wall fixtures, and custom installations. 3. Metalworking – draw and measure angles for cutting, welding, or assembly work with dependable precision. Material: quality aluminum alloy Measurement Unit: Millimeters (minimum 1 mm) Scale Type: Doublesided, laser engraved Angle Range: 22.5° to 90°, with preset common angles Durability: scratch and corrosion resistance, resistant to wear over time This tool delivers accuracy, durability, and efficiency for professional tradespeople, hobbyists, and anyone needing precise measurement and marking in their work.