Keson RR318N Contractor Grade Measuring Wheel (Graduations: ft. & in.), 12-1/2-Inch Diameter 3-Foot circumference measuring wheel 5-Digit, easy-read, magnified counter that measures in feet and inches and will subtract in reverse 3-piece pistol grip handle with quick-snap cam locks Molded, assembled, & tested in the USA Heavy-Duty, 3-foot, precision-molded plastic wheel takes years of field abuse Heavy-duty, 3-foot, precision-molded plastic wheel takes years of field abuse Five-digit easy-read magnified counter (9,999 feet) subtracts in reverse Measures almost two miles without resetting Curved, telescoping handle adjusts to comfort level Time-proven designs with more than a dozen years of continuous improvement