Teledyne RD Instruments, located in San Diego, CA, specializes in the design and manufacture of underwater acoustic Doppler products for a wide array of current profiling and precision navigation applications. Originally founded as RD Instruments, the company was formed in 1982 through the development of the industry's first Acoustic Doppler Current Profiler (ADCP), a revolutionary device capable of profiling currents at up to 128 individual points in the water column. Through the years, RD Instruments experienced steady growth and remained dominant in the industry by providing an unwavering commitment to new product development, superior data quality, and the highest level of customer service and support. In August 2005, RD Instruments was purchased by Teledyne Technologies, and now operates as a wholly owned indirect subsidiary of Teledyne Technologies, Inc. Upon acquisition, the company’s name was changed to Teledyne RD Instruments (TRDI). TRDI was one of the founding members of the larger Teledyne Marine group, which is group of 23 brands dedicated to providing customers with a wide array of subsea and surface technology ranging from single-use to turnkey solutions. Teledyne RDI currently employs over 150 multi-disciplined scientists, engineers, technicians, sales, and support personnel; and resides in an 80,000 square foot ISO-9001:2008 facility that includes state-of-the art engineering, laboratory, manufacturing, and test areas. Through market growth and product diversification, the company is now comprised of three distinct Product Lines: Marine Measurements: Acoustic Doppler current profiling, wave measurement, and Conductivity, Temperature and Depth (CTD) products for coastal and deep water oceanographic environments.   Navigation: Precision navigation products for the marine environment.   Water Resources: Discharge and flow-measurement products for inland environments. Teledyne RDI continues to lead the industry by providing customers with innovative Doppler technology backed by unparalleled global, customer service and support.