This Distance Measuring Wheel with Foldable Handle and Storage Bag from Voche is ideal for the precision measurement of roads, pavements or land. Simply reset the counter to zero and then start to walk over the area that you want to measure and it will automatically record measurements as you walk. The swinging arrow marker allows you to measure between a precise start and end point. Effective range: 99999.9 metres | Wheel Diameter: 31.8cm (12.5"), Manufacturer: Tooltime.