Ashtead Technology is one of the largest rental groups throughout the world. The company provides rental equipment for a variety of markets. Ashtead Technology rents technical equipment for underwater positioning and survey, remote visual inspection in hazardous areas, environmental monitoring and non-destructive testing. The company provides equipment to specialized markets throughout the world, such as environmental compliance, mineral prospecting, semiconductor clean room performance testing, and offshore oil and gas. Ashtead Technology s underwater and surface positioning equipment includes fiber optic multiplexers, long and ultra-short baseline positioning systems and accessories, surface positioning equipment that features global positioning systems and gyrocompasses. Ashtead Technology maintains its headquarters in Houston.