pl23_ship4398.jpg
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https://www.noaa.gov/media/digital-library-photo/pl23ship4398jpgDescription
Figure 26. Ball bearing swivels devised by Jules Le Blanc to prevent untimelytwisting of cables, getting them caught on hull projections, or even breaking of lines.
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