Digital Goniometer Electronic 3 In 1 Bubble Level Box Woodworking Tools Electronic Angle Ruler Backlight Protractor Inclinometer 3-in-1 Level Box: Digital Woodworking Electronic Protractor Inclinometer with Backlight for Precise Angle Measurement This angle gauge, with a high degree of accuracy (±0.2°) and a resolution of 0.05°, covers a comprehensive measuring range from 0 to 360° (4*90°), exclusively in DEGREES. It's an indispensable tool in fields such as woodworking, construction, machinery, telecommunications, and automotive, ensuring repeatability and consistency. Pre-calibrated at the factory, it's ready to use out of the box. Key Features: Exceptional Repeatability and Consistency: With a measuring accuracy of ±0.2° and resolution at 0.05° across a 0 to 360° range, this tool enhances efficiency in various applications. Durable Aluminium Framework & Magnetic Base: Unlike models using plastic, this gauge's robust aluminium alloy construction ensures longevity. The magnetic base effortlessly attaches to any ferrous surface for stable measurements. Dual Measuring Modes: Verify true level. Measure the relative angle between two surfaces. User-Friendly, Reversible LCD Display: Features a large, backlit LCD for clear, accurate readings even in low light. An ERROR indicator alerts users to incorrect positioning (e.g., exceeding a 30-degree tilt), ensuring reliable measurements. Powered by just one battery, this design simplifies battery replacement without needing a screwdriver. With 2* AAA batteries, it averages 50 hours of operation. An automatic shutdown function activates after 5 minutes to conserve power. Specifications: Powerful built-in magnets enhance stability on iron surfaces. Easy-to-read, large LCD with backlight. Fast and precise readings. Accuracy: 0.2 degrees. Resolution: 0.05 degree. Repeatability: 0.1 degree. Operational temperature range: -10 to 50°C. Measuring range: 4*90 degrees. Usage Tips: An "ERROR" message appears when the device tilts over 30 degrees, indicating an inaccurate measurement scenario. This tool redefines precision in your projects, providing a solid, reliable base for accurate measurements and angles, critical for achieving professional results.