Durable, lightweight and compact portable measuring wheel measures up to 10,000m. Easy to use: simply press the reset button on the lever and the counter will measure distance covered as the wheel moves forward and subtracts if reversed. Precision engineered to the highest quality for accurate measurement. The distance meter has a 5 digit readout and comes with a back light facility for night use. Comes complete with durable canvas carry bag and stand. Wheel diameter is 318mm.