Detector apparatus for detecting wind velocity and direction and
Detector for dry deposition of atmospheric contaminants
Detector for dry deposition of atmospheric contaminants having a
Device for determining the vertical distance between two element
Device for measuring in real time sea currents in deep water
Device for measuring sea currents at great depths
Device including a thermostatic enclosure, which is suspended fr
Differential depth indicator
Digital weather station
Dual filter, drop based, digital raingauge
Dynamically balanced apparatus for water borne instruments