Lightweight materials and quality construction make the Rolatape measuring devices the perfect choice. The MM-12 Single Wheel gives accurate measurements on any smooth, hard surface, from countertops to sidewalks. Features telescoping handle, 5-digit counter, records up to 10,000 feet or 1,000 meters, with a convenient push-button reset. Safety green color. The MM-12 Twin model provides greater stability and traction. The MM-30 is a workhorse for longer indoor and outdoor measuring needs. Records up to 10,000 feet or 10,000 meters, with a 3' (1 meter) circumference wheel. Insert and lock handle, with a wheel stand to keep it upright.