Large Wheel Measure Master® - Heavy-duty constructed and features a sturdy 5-ft circumference wheel for precision field measurements. For all-weather measuring over rough or uneven terrain. Specially crafted handle ensures firm grip, ease of operation. Support ribs on handle socket for added strength. Completely sealed counter records in feet and inches up to 10,000 feet without resetting. Precision calibrated wheel with Neoprene tire for outstanding traction and durability. Wheel circumference 5 ft.; wheel diameter 19 in.; weighs 6 lbs. Safety glow green counter casings. Equipped with lift and lock folding handle.