1、Multiple Functions: Supports metric and imperial units switching, HOLD function to prevent deviation, MEMORY function for viewstored, supports storing 5 data, one button to clear, turning on or off power, turning on or off backlight. 2、High Accuracy: This digital measurement wheel has high accuracy, with a maximum measurement value of 100000FT/M, FT, IN, M, CM measuring units, making it suitable for individual or professional use. 3、Portable and Practical: The measuring wheel is equipped with a telescopic pole, with a range of 23‑40 inch. After shrinking to 23in, it can be placed in backpack. All buttons have IP54 waterproof and dustproof design, with a long service life. 4、Wide Applications: This measuring wheel is suitable for various indoor and outdoor distance measurement projects, is an ideal choice for property appraisers, law enforcement personnel, construction or landscape beautification workers, and homeowners. 5、Interesting Measurement: Whether for individual or industrial purposes, measuring straight lines and curves is easy. You only need to walk to measure any type of distance, and the entire measurement process is both interesting and simple.