Product Name: Digital Angle Box Material: Aluminum Alloy, Plastic Dimensions: 5.6*5.4*2.5cm / 2.2*2.13*0.98 inches Resolution: 0.01° Range: 4*90° Operating Temperature: -12 to 42°C Battery Type: 7-volt batteries * 2 (not included) Error Value: ±0.02° Precise measurement, high-definition digital display: Utilizing high-precision sensors, the measurement resolution can reach 0.01°, enabling it to sensitively capture the slightest changes in angles. Combined with a 2-inch LCD digital display screen, the display is clear and intuitive, with quick and accurate readings. Even in strong light conditions, it can easily read the data, making the measurement results clear at a glance. Multiple function keys, convenient operation: Equipped with ON/OFF power switch, Tilt% tilt percentage display key, ZERO zeroing key, and HOLD data retention key. The layout of the three keys is reasonable, and the operation is simple and easy to understand. Users can quickly switch between different measurement requirements and easily complete various angle measurement tasks. IP54 protection, reliable: With IP54-level waterproof and dustproof capabilities, the rigorous assembly process effectively prevents dust, water droplets, and oil stains from invading. Whether in industrial workshops, construction sites, or outdoor environments, it can work stably and reliably, adapting to various complex and harsh measurement scenarios. 4×90° measurement, flexible application: Supports 90° angle measurement in four directions. The screen supports automatic rotation, making it convenient for users to view data from different angles. This design enables it to be proficient in measuring various surfaces such as planes, slopes, and vertical surfaces, and is widely used in woodworking, mechanical installation, decoration projects, and other fields. Compact and portable, thoughtful packaging: Small in size, lightweight, convenient to carry and operate handheld. Equipped with an independent packaging of non-woven fabric box, it not only protects the instrument from dropping and crushing during transportation, preventing damage during the carrying process, but also facilitates storage and placement, making it an ideal measuring tool for engineers, technicians, and DIY enthusiasts.