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Description
Figure 20. Dumaige thermometer constructed by Paul Dumaige who was a long-timecollaborator with the Prince of Monaco. Duimage was known for having constructed the closing mechanism for a plankton net used by Albert I. It is not knownwhether this instrument was a copy of an existing instruments or if it was made to improve certain shortcomings. Two of them were used in 1892 at 4808 meters. (Image credit: Oceanographic Museum of Monaco | Y. Berard)