Dual Wheel Measure Master® - Light and easy-to-handle for accurate measurements, both indoors and out, on firm surfaces. Dual wheels provide exceptional traction and stability. Completely sealed push button counter records feet and inches to 10,000 feet without resetting. Three-piece telescoping handle collapsed measures 19¼ in., extending to 40½ in. Wheel circumference 1 ft.; wheel diameter 4 in.; weighs 2 lbs. Safety glow green counter casings.