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NOAA Photo Library Image - ship4265

Figure 57. Puhler sounder, described by Christian Puhler in 1563, repeated an idea first put forth by Cardinal Nicholas Pusanus a century earlier. The principle, was to attach a float to a weight making it heavier than water. Upon striking bottom, the float would detach. Depth would be derived from round- trip travel time. It is unknown if this device was ever field tested.

Image ID: ship4265, 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