Measuring Wheels: Type - Collapsible Measuring Wheel; Display Readout - 5-digit Counter; Readout Scale - Feet; Frame Type - Single-Arm w/Stand; Frame Material - Steel; Frame Finish - Safety-Glo; Wheel Circumference - 3.00 ft; Wheel Diameter - 11.25"; Wheel Material - Rubber; Unit Size - 22.25" Collapsed, 40.25" Extended; Case - Carrying Case Included; Manufacturer Series - Professional Series, 300