pl23_ship4417.jpg
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https://www.noaa.gov/media/digital-library-photo/pl23ship4417jpgDescription
Figure 43. Nansen total immersion hydrometer, an instrument of variable weightand constant volume. The fact that the instrument is completely immersed during use explains the term constant volume. Its principle was first put forth byGiuseppe Pisati in 1890 and adopted by Fridthof Nansen in 1900. In 1901 it wasused by Jacob Schetelig, Nansen's assistant, from the MICHAEL SARS.
Credit
Oceanographic Museum of Monaco
Photographer
Y. Berard
Collection
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