DuraWheel DW-PRO 12.5" Diameter Distance Measuring Wheel. With its Oval-Shaped Tube, it proves to be a strong and lasting tool. The Heavy-Duty Commercial-Grade DW-PRO Measuring Wheel is designed and built for the professional user. You can feel the difference as soon as you pick it up. When you click the handle to secure it into the upright position, it's a very secure and quality click. You can feel the quality and strength with the oval shaped tube design (an oval is stronger than a circular type tube). A hefty and ergonomically designed pistol grip with convenient brake and counter-clear controls at your finger tips. Another handy counter-clear button is located at the counter head, which means you have a button down low, and a button up at the handle that will reset the counter back to zero. A very convenient design that impressed us the first time we used one. The unique folding handle design offers compact storage. Once folded, the unit can be carried by the built-in carrying handle. Smooth counter operation via "lifetime" timing belt drive. This design isolates counter from surface vibration. The DW-PRO measures to the nearest unit and up to 9,999 Feet. Note the wide footprint and stable design of this sturdy, stow-able, spring-loaded stand. The kickstand frees your hands which is great when you're writing measurements down and have more measurements to make.