Bimetallic Pocket Thermometer

<< >>
This lovely bibelot, which probably dates from the 19th century, has a silvered case like a pocket watch. Several concentric scales on the white porcelain face show the temperature according to various scales. The one marked "REAU" refers to René Antoine Ferchault de Réaumur, a French scientist who, in 1730, proposed a temperature scale according to which water froze at 0 degrees and boiled at 80 degrees. The one marked "FAHR" refers to Daniel Gabriel Fahrenheit, a Polish scientist who in 1724 propsed a temperature scale according to which water froze at 32 degrees and boiled at 212 degrees.
Currently not on view
overall: 2 in; 5.08 cm
overall in case: 1 in x 2 1/2 in x 2 7/8 in; 2.54 cm x 6.35 cm x 7.3025 cm
ID Number
catalog number
accession number
See more items in
Medicine and Science: Physical Sciences
Measuring & Mapping
Thermometers and Hygrometers
Data Source
National Museum of American History, Kenneth E. Behring Center


Add a comment about this object