Feature: 1. HD Backlight Screen: This distance measurement tool features a large HD backlight screen, allowing clear visibility in dark environments. The backlight function can be turned on at any time for easy reading. 2. Automatic Calibration: This level distance meter includes an automatic calibration function that calibrates before use, ensuring high reliability and accuracy while significantly reducing measurement errors. 3. Wide Application: This leveling tool distance meter is suitable for various applications including building construction, engineering surveying, gardening, urban planning, home inspection, and water and electrical installation. 4. Compact And Portable: This handheld distance measuring device is compact and lightweight, making it convenient to carry and operate. 5. Sturdy And Durable: Constructed from high-quality ABS and TPU materials, this multifunctional distance measuring ruler is durable, impact-resistant, and built for long-term use. Specification: Item Type: Leveling Tool Distance Meter Material: ABS, TPU Model: NF-271 Range: Approx. 50m / Approx. 164ft Measurement Modes: Single, Continuous, Area, Volume, Pythagoras Measurement Accuracy: ±2mm Battery: 3 x AAA Batteries (Not Included) LCD Screen: Backlit FSNT Wavelength Output: 620-680nm, <1mw Operating Temperature: 0-40°C Storage Temperature: -20-60°C Proof Level: IP54 Package List: 1 x Leveling Tool Distance Meter 1 x Manual