1. Precise angle measurement and locking The diagonal ruler is constructed from stainless steel with high quality aluminium components. It provides accurate angle measurement with a beveled protractor that glides smoothly and locks securely in the range of 10 to 170 degrees. 2. User friendly customization and readability Easily adjustable markers allow quick setup for any angle or shape. Tighten or loosen the screws to customize the measurement, then read the markings clearly and quickly for accurate results. 3. Versatile applications for different materials A flexible tool suitable for a variety of angle and diagonal tasks. It is ideal for working with tiles, bricks, stones, wood and laminate. A practical choice for professional craftsmen and DIY enthusiasts alike. 4. Convenient portability and storage The tool retracts and folds for easy transport and compact storage. Take it to construction sites or shops as needed. Read both outer and inner corners directly from the scale, and divide the top corner into two parts without changing any settings. Use scenarios - Tile and stone installation: quickly replicate complex angles and cut lines for backsplashes, countertops, and tile borders, ensuring consistent joints. - Woodworking and furniture making: set precise miter and bevel angles for frames, legs, and cabinetry, improving fit and finish. - Masonry and laminate projects: lay out brick courses or laminate patterns with repeatable angles, saving time on layout and measurement.