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NOAA Photo Library Image - ship4242

Figure 40. Fol bathometer, designed by Hermann Fol who was a collaborator with Prince Albert I of Monaco. This instrument used the same principle as the Erics son sounder. Fol replaced water with mercury in order to determine the depth attained as a function of the quantity of liquid displaced by the pressure. Details concerning tests and effectiveness of this device are unknown.

Image ID: ship4242, 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:
November 10, 2017