Bimetallic Pocket Thermometer

Description
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.
Location
Currently not on view
Object Name
bimetallic pocket thermometer
thermometer
Measurements
overall: 2 in; 5.08 cm
ID Number
PH*325408
catalog number
325408
accession number
256201
subject
Measuring & Mapping
Thermometers and Hygrometers
See more items in
Medicine and Science: Physical Sciences
Thermometers and Hygrometers
Data Source
National Museum of American History, Kenneth E. Behring Center

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