Keson MP401 Metal Professional Spoked Wheel – 15.5 in / 4 ft Circumference The Keson MP401 is a best-selling metal spoked wheel with a 4 ft circumference, designed to roll smoothly over uneven ground and span divots that smaller wheels might dip into. Its larger size ensures consistent click registration at a pace suited for long-distance surveying or construction layout. Built with a robust steel frame and precision spoked wheel, the MP401 combines accuracy, durability, and smooth operation . This professional-grade measuring wheel is engineered for repeated field use and delivers reliable performance across challenging surfaces. Key Features • Metal spoked wheel for rugged durability • 15.5 in diameter, 4 ft circumference for long-range measurements • Smooth roll over uneven terrain for consistent accuracy • Accurate distance click registration for efficient measurement Ideal For Surveyors, engineers, and contractors needing a high-performance metal measuring wheel capable of long-range measurements, smooth operation over uneven surfaces, and reliable field performance.