ranging wheel measuring meter counter digital display mechanical hand push rolling ruler push ruler folding engineering outdoor measuring land

This product uses the principle of rolling motion between the roller surface and the measuring face for measurement. The rotation of the roller is directly transmitted to the counter, and through the gears inside the counter, the length of rotation on the roller surface is converted into the corresponding length dimension. The roller circumference comes in two options: 1 meter and 0.7 meters. The counter comes in two types: detachable and non-detachable, with the ability to reset to zero. There are two total options: 10,000 meters and 100,000 meters. It comes in two versions: with brake and without brake. The rod comes in two types: aluminum alloy and iron rod.The rod is telescopic, making it easy to store. Note: The roller surface has been finely processed, with an overall error of ≤1%. In actual measurement, due to variations in the surface being measured and wear on the roller surface during use, the measurement accuracy decreases, and the overall error increases.