Feature: 1. Expanded Angle Coverage: Experience unmatched versatility with our upgraded metric multi angle ruler, capable of measuring and marking angles from 5° to 90°. This feature is suitable for complex projects that require accurate multi angle measurements, enhancing both work efficiency and accuracy in your tasks. 2. Safety Drop Proof Design: Our innovative drop proof feature ensures stable one handed operating, allowing you to focusing on accuracy without worrying about the ruler shifting or falling, especially when drawing intricate lines. This design prioritizes safety and usability in demanding work environments. 3. Metric Accuracy: Designed with attention to detail, this multifunctional gauge right angle ruler utilizes both metric and imperial units for precise measurements. Clear etched markings provide unparalleled accuracy for all your measuring needs, making it a good tool for professionals and handcraft enthusiasts alike. 4. Secure Angle Locking: Maintain consistent angles with our good locking mechanism. Whether you're working with 45° and 90° frames or adjusting in 10° increments from 10° to 80°, our angle stop ensures dependable performance for accurate marking every time, fostering confidence in your measurements. 5. Excellent Aluminum Alloy Material: Constructed from robust aluminum alloy, our multi angle measuring ruler is built to last. It's the good choice for architects, engineers, and carpenters, making it the preferred tool for measuring, marking, and drawing in schools, workshops, and construction sites. Its durability ensures it can withstand the rigors of heavy use. Specification: Item Type: Right Angle Ruler Material: Aluminum Alloy Measuring Range: Approx. 30cm / 12in System: Metric Imperial. Package List: 1 x Right Angle Ruler