Benthos Acoustic Altimeters and Pingers

The BFP-312 Bottom Finding Pinger is a sophisticated acoustic transmitter which continuously shows height above bottom for oceanographic devices

The PSA-900 Programmable Sonar Altimeter is a precision instrument used to measure underwater ranges acoustically.

The PSA-916 Deep Programmable Sonar Altimeter is a low cost, light weight altimeter designed for diverse applications in the marine environment.