Uncles STD profiler Uncles STD A direct-reading salinity-temperature-depth profiler including a conductivity cell and thermistor. An analogue readout provides low accuracy and precision measurements. The unit was home-built by R.J. Uncles from the Plymouth Marine Laboratory to measure water characteristics in estuarine environments. It was used from the late 1970s to the 1990s. 2012-01-05 09:34:05.0 SDN:L22::TOOL0448 SDN:L22::TOOL0448 SDN:L22::TOOL0448 1 1 2012-01-05 09:34:05.0 accepted false