DuraWheel distance measuring wheels are professional grade tools built for rugged commercial use. There are four models to choose from, in different sizes and trim levels. DIGI-PRO has a digital counter that can convert distance into 8 different scales of measurement. DW-PRO, DW-1000, and DW-500 are all available in either Feet/10ths or meters/centimeters. Carrying cases are available for convenience and protection of your measuring wheel.