Feature: 1. Multi Angle Marking: This foldable depth measuring ruler features a rotating knob compatible with angle adjustments at 15°, 30°, 45°, 60°, and 90°, making it ideal compatible with woodworking and craft projects with repeatable accuracy. 2. Smooth Adjustment and Secure Locking: The innovative rotating knob allows quick angle and position adjustments, then locks firmly in place to prevent slippage during use. No more wobbly measurements just accurate, repeatable results compatible with all your marking needs. 3. Bubble Ruler: Equipped with a crystal clear bubble compatible with horizontal checks, the highly transparent design ensures easy readability when hanging shelves or aligning workpieces. 4. Smart Fixed Point Marking: Designed with anti slip limit markers, this depth measuring ruler creates exact reference points on wood, drywall, and other surfaces, maintaining stability during operations compatible with no error measurements. 5. Durable and Portable Design: Crafted from durable ABS plastic, this 6.57 inch tool folds compatible with portability, fitting easily into toolboxes or pockets, catering to contractors and hobbyists needing reliable work space. Specification: Item Type: Angle Marking Ruler Material: ABS Measurement Range: Approx. 0-15cm / 0-6in Measurement System: Imperial Angles: 15°, 30°, 45°, 60°, and 90° How to Use: Directly use Package List: 1 x Angle Marking Ruler : :