Precision laser-engraved metric scale: clear, durable graduations provide accurate, easy-to-read measurements for precise layout and marking. Modular multi-angle design: assemble the screws to use the tool as a 3D multi-angle measuring device; remove the screws with a hex key to convert it into a square ruler and a miter-triangle ruler for versatile use on the job. Durable aluminum-alloy construction: rust-resistant, high hardness with good toughness. Lightweight and portable for frequent on-site use while remaining durable for long-term woodworking tasks. Multi-function tool: measures, corrects, and marks workpieces. Designed to handle measurements beyond one foot, helping speed up common carpentry tasks and reduce rework. Key attributes Function: measuring, squaring, angle transfer, marking Scale: metric, laser-engraved for longevity and readability Material: high-quality aluminum alloy, rustproof and wear-resistant Conversion: configurable between 3D multi-angle tool, square ruler, and miter triangle using screws and a hex key Portability: light weight for easy transport between shop and site Practical use scenarios Cabinet and trim installation: quickly transfer and check complex angles, mark cut lines, and verify squareness before cutting or fastening to reduce material waste. Frame and molding work: assemble the multi-angle setup to measure compound angles for mitered corners, or switch to the miter-triangle mode for precise 45° and 90° checks. On-site layout and repair: use the square ruler mode to confirm right angles on tabletops, stair stringers, or joinery, then switch to the 3D mode for depth and step measurements. Why carpenters and DIYers choose this tool Combines several shop tools into one compact device, saving time and reducing the number of separate gauges to carry. Robust aluminum construction tolerates jobsite conditions while keeping the tool light. Clear metric markings and modular configuration make it straightforward to move between measuring, marking, and squaring tasks with minimal setup. Usage notes Assemble or disassemble the configurable parts using the included screws; a hex key is required to remove or tighten them. Keep the laser-engraved scale free of heavy paint or debris for most accurate readings.