CLARKE | Road Measuring Wheel Orange/Black Color Body Foldable Type With Addition And Subtraction Ability | RMWCLxWxH : 50x43x15 centimeters Clarke Road Measuring Wheel have diameter of 318mm and circumference of 1m, this measuring wheel is easy to read with pointers that indicate then start position and the ability to add forward and subtracts in reverse. With robust construction it is easy to fold and carry. Measures up to 99999. 9metres feet with an accuracy of 1%. Wheel diameter of 318mm. Ability to add forward and subtracts in reverse. Circumference of 1m,