1. 
   Ekman current meter
   The Ekman current meter is a mechanical flowmeter invented by Vagn Walfrid Ekman a Swedish oceanographer, in 1903. It comprises a propeller with a mechanism to record the number of revolutions, a compass and a recorder with which to record the direction, and a vane that orients the instrument so th...
   Found op http://en.wikipedia.org/wiki/Ekman_current_meter
   
   
2. 
   Ekman current meter
   (from the article `Ekman, V Walfrid`) ...he joined the staff of the International Laboratory for Oceanographic Research in Oslo, where he remained until 1909. During those years he proved ...
   Found op http://www.britannica.com/eb/a-z/e/16
   
   

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