MEASURING WHEEL: The Structo-Cast measuring wheel by Johnson is efficiently designed to help landscape architects; insurance representatives; civil engineers and surveyors to help them in long-range measurement projects and construction sites. ASSURED QUALITY: This long measuring wheel has a sturdy and rigid aluminum frame along with a rubber wheel that adds to the lifespan and performance. It also features a non-slip rubber grip handle that helps in easy measuring operation. PRACTICAL DESIGN: The measuring wheel features a 3-piece telescoping aluminum handle with a 5-digit magnified counter that offers accurate measurement results in both feet and inches. The handle can be extended from 18 in. to 42 in. to make long-range measurement projects easy. WIDE APPLICATION: This rubber measurement wheel works efficiently to perform different indoor and outdoor measuring tasks; including road construction; concrete pours; driveway installation and resurfacing. PRODUCT DESCRIPTION: The extendable measuring wheel has a 12.5 in or 3 ft. diameter. It comes with a folding stand that makes storing it easy and convenient for you.