pl23_ship4412.jpg
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https://www.noaa.gov/media/digital-library-photo/pl23ship4412jpgDescription
Figure 40. Thoulet soluble cartridge messenger for delayed release ofinstruments. These soluble weights were designed to initiate the functioningof an immersed device at a pre-determined time. Thoulet had apparently designed this device for use with sampling nets . He started tests with these in 1893in Lake Gerardmer and provided samples for Prince Albert I to use at sea.
Credit
Oceanographic Museum of Monaco
Photographer
Y. Berard
Category
Voyage to Inner Space
History of Oceanography Collection
The Early Instruments - Collections of the Oceanographic Museum at Monaco
Miscellaneous Instruments, Deck Gear, and Laboratory Instruments
Keywords
Oceanography