Multi-roller Depth Measuring Ruler, Adjustable Woodworking Multi-Angle Marking Ruler, Positioning Marking Protractor Tool Multi-roller Depth Measuring Ruler, Adjustable Woodworking Multi-Angle Marking Ruler, Positioning Marking Protractor Tool Foldable Multi-roller Depth Measuring Ruler Specifications Name: Foldable Multi-roller Depth Measuring Ruler Material: ABS Dimensions: 167 × 37 × 14 mm / 6.57 × 1.46 × 0.55 inches Features Multi-angle Marking Capability: Supports precise angle marking of 15°, 30°, 45°, 60°, and 90° to meet different angle marking needs. Adjustable Locking Rotary Knob: The integrated rotary knob allows for easy adjustment of the ruler's angle and position. After setting the desired parameters, the knob will lock firmly in place, ensuring stable and accurate positioning during use. High-precision bubble level: Built-in high-precision bubble level. The bubble is highly transparent and clearly visible, allowing for quick and accurate leveling to ensure reliable measurement results. Precise point marking: Equipped with a dedicated point marking function, simplifying precise marking operations on wooden boards and other workpieces. Anti-slip boundary design: Employs a boundary marking mechanism to effectively prevent the ruler from slipping during marking, maintaining consistent marking accuracy. Package Contents: 1 × Multi-roll folding depth measuring ruler