**Revised Description:** Versatile Angle Adjustments: Adjust smoothly from 30 to 90 degrees using the ruler stop (needle on handle). The small pen tip hole ensures precise, smooth drawing for accurate results. Durable Construction: Made of sturdy magnesium aluminum alloy, this tool resists bending and is compact for portability. Enhanced Features: Includes a hidden anti-drop design for secure measuring and drawing, offering more than a standard ruler. Easy Storage: Built-in hole for wall hanging, keeping your workspace tidy. The 12-inch size fits easily in toolboxes or bags. Wide Applications: Suitable for woodworking, education, industry, or home use, with multi-angle measuring for various tasks. **Details:** - Measuring range: 0-30cm / 0-11.81in - Marking angles: 10��, 15��, 20��, 30��, 60��, 70��, 80�� - Material: Magnesium aluminum alloy - Color: As shown - Includes: 1 woodworking square ruler, 2 marker pens Note: Slight color variations may occur due to lighting or display differences. Measurement tolerance: +/- 1-3cm.