Komelon USA Series 60 Measuring wheel measures 19" Dia and has 7 digit gear driven counter that measures up to 10000'. Measuring wheel with magnifying lens has flexible twist/lock handle and pistol grip for added comfort. Diameter: 19-inch. Handle type: Pistol Grip, High Visibility Green. Measuring system: Feet/Inch. Gear driven counter with push button reset and spring loaded kickstand. Adjustable twist and lock handle with comfortable pistol grip. 7 digit counter reads up to 10,000 Feet. Polyvinyl tread for improved traction. Magnifying lens for improved readability. Komelon USA Measuring Trundle Wheel: For surveying a property or putting up a fence, the MK6012 is the right choice.