Features Crystal-Clear Digital Display: Equipped with an easy-to-read LCD screen, this Digital Angle Ruler provides clear and precise readings instantly, complemented by a durable laser-etched scale that resists wear and tear. Comprehensive 360° Measurement: The innovative hinge mechanism of this Electronic Protractor enables complete 360-degree internal and reverse angle measurements, guaranteeing versatility for a variety of projects. Advanced Functionality: With a convenient hold button to lock in measurements and a reverse function to invert the display, this Angle Finder Ruler simplifies the process of measuring and reading large angles. Rugged Aluminum Construction: Crafted from high-strength aluminum alloy, the sturdy build of this angle ruler ensures it can endure the rigors of extensive use in any professional or DIY environment. Versatile Tool for Professionals: Ideal for an array of applications, this High Accuracy Angle Ruler is a must-have for professionals in construction, carpentry, machinery, and more, as well as for home improvement enthusiasts. Feature: 1. EASY TO READ: The digital LCD screen makes the reading clear and intuitive, and the laser etched scale is clear and not easy to wear. 2. 360° MEASUREMENT: The hinge mechanism on this angle ruler allows for 360° internal measurement and reverse angle measurement, ensuring comprehensive measuring capabilities. 3. MULTI FUNCTION: Press the hold button to retain the measured data, and use the reverse function button to flip the screen for easy reading when measuring larger angles, more convenient. 4. STURDY ALUMINUM ALLOY: Constructed from sturdy aluminum alloy, this angle finder ruler is built to withstand heavy use and provide long lasting performance. 5. WIDE APPLICATION: This digital protractor is suitable for construction, drafting, carpentry, masonry, machinery, decoration, home furniture, and more, ideal for precise measuring and marking. Specification: Item Type: Digital Angle Ruler Material: Aluminum alloy Specification: 0-200mm Range: 0-360° Resolution: 0.05° Tolerance Range: ±0.3° Battery: 3V CR2032 button battery x 1 (built in) Capacity: 150mAh (single battery capacity) Use: Can be used in construction, drafting, carpentry, masonry, machinery, decoration, home furniture, and related work, for measuring and marking Package List: 1 x Digital Angle Ruler Package List 1 x Digital Angle Ruler