3-foot circumference wheel is precision calibrated. Accurately measures up to 100,000 feet Contractor duty! Rolatape re-invented the most accurate measuring wheel back in 1950! Rolatape quality remains unmatched. Use this steel measuring wheel indoors or out. 40 1/4in. high. Handle folds for easy portability at 22 1/4in. overall. Wide, hard-rubber, traction tread. Counter guard for reset knob.