Profile: Ashtead Technology Rentals provide rental equipment. Our inventory for underwater and surface positioning includes equipments like fibre optic multiplexers, LBL and USBL positioning systems & accessories and surface positioning equipment. The 360 Sub-Bottom processor is a small digital seismic processor designed for use as a receiver for any single-channel sub-bottom profiling system. We specialize in renting a wide variety of analyzers, detectors, monitors and samplers for environmental protection and industrial hygiene applications. We assist in non-destructive test program for virtually any surface structural geometry.