Founded in 1954, Sterling Crane sells a variety of new and pre-owned equipment. It is one of the largest crane rental supply companies in North America. The company maintains a fleet of more than 650 boom trucks, axles, forklifts, and crawler, rough terrain, tower and hydraulic truck cranes. Sterling Crane has branch operations in more than 20 locations throughout the United States and Canada. It operates rental and contract lifting divisions. The company offers a variety of engineering services through Procrane Engineering. Sterling Crane has achieved ISO 9002 certification. The company is a part of The Marmon Group, which is an international association of more than 125 manufacturing and service businesses.