pl23_ship4358.jpg
Image
Download ( 1.09 MB )Permalink
https://www.noaa.gov/media/digital-library-photo/pl23ship4358jpgDescription
Figure 62. Breguet-Saxton metallic thermometer first invented about 1817 by the instrument maker Louis Abraham Breguet. The first of this type was composed of platinum, silver, and gold with the silver placed in the center. Differentialexpansion of the metals provided the temperature measurement. In 1848, JosephSaxton made a similar one for the U. S. Coast Survey but it was inaccurate.
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
Thermometers and Other Temperature Measuring Equipment
Keywords
Oceanography