Designed to handle a variety of measuring jobs indoor and out. Durable neoprene tire for good traction over most surfaces. Push-button reset counter records feet and inches up to 10,000'. Counter subtracts as well as adds. Wheel circumference is 36". Diameter is 12-1/2". Folding heavy-duty handle with curved gripping area extends and locks at 39". Heavy-duty die-cast aluminum wheels and kickstand.