Measuring wheels roll along surfaces to take readings over long distances that are beyond the capacity of reeled tape measures and measuring ropes. Also known as surveyor's wheels and trundle wheels, they measure a specific distance with each rotation of the wheel based on the wheel size. The wheel follows surface contours, so the flatter the surface, the more accurate the distance measurement will be. These measuring wheels set their long handle at a convenient height for operators to push the wheel while walking behind it.