Technical data Foldable measuring wheel, maximum measuring range: 99,999.9 m; minimum measuring range: 0.1 m; tolerance: +/- 0.05%; wheel diameter: 318mm; weight: 1.1 kg. Precise distance measurementThe measuring wheel measures one tenth of a meter, which is particularly suitable for practical distance measurement up to 9,999 meters. Perfect and correct measurement results are important reasons for choosing us. Folding DesignThree-part folding measuring wheel, one-key unlocking and folding. It occupies a small space and is safe and convenient to carry. Ergonomic DesignGun style measuring wheel, easy to grip, comfortable bracket to support the wheel, sturdy aluminum alloy shaft, sealed gear, central indicator arrow to maintain balance. Wide Use32cm thick rubber wheel design can easily pass through stones and obstacles, and accurately measure lawns, asphalt, grass, terrain, rocks, etc. . It can easily measure roads, land and road construction.