Feature: 1. HD Backlight Screen: This distance measurement tool device adopts a large HD backlight screen, the use of the dark environment is not affected by the use of the backlight display at any time to turn on the backlight function. 2. Automatic Calibration: This levels distance meter has an automatic calibration feature that automatically calibrates before use to provide the user with maximum reliability and accuracy, greatly reducing errors in the application. 3. Wide Application: This levelling tool distance meter has a wide range of applications and can be used in building construction, engineering surveying, gardening, town planning, housing acceptance and water and electricity construction and other industries. 4. Compact And Portable: This handheld distance measurement tool is small and lightweight, which makes it very convenient to carry around and use. 5. Sturdy And Durable: This multifunctional measure distance ruler is made of excellent ABS and TPU material, which is sturdy and durable, not easy to be damaged, and has a long service life. Specification: Item Type: Levelling 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,