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NOAA Photo Library Image - ship4238

Figure 36. Ericsson pneumatic sounder, invented in 1835 by John Ericsson of USS MONITOR fame. This was among the first instruments to use the principle of pressure needed to compress air a given amount to derive the depth of water.

Image ID: ship4238, Voyage To Inner Space - Exploring the Seas With NOAA Collect
Photographer: Y. Berard
Credit: Oceanographic Museum of Monaco

Category: Oceanography/Historical instruments/

High Resolution Photo Available





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Last Updated:
April 30, 2013