Features ★ 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. ★ 360° MEASUREMENT: The hinge mechanism on this angle ruler allows for 360° internal measurement and reverse angle measurement, ensuring comprehensive measuring capabilities. ★ MULTI FUNCTION: Press the hold button to retain the measured data, and use the REV function button to flip the screen for easy reading when measuring larger angles, more convenient. ★ STURDY ALUMINUM ALLOY: Constructed from sturdy aluminum alloy, this angle finder ruler is built to withstand heavy use and provide long lasting performance. ★ 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