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.

Location: Currently not on view

See more items in: Medicine and Science: Physical Sciences, Thermometers and Hygrometers, Measuring & Mapping


Exhibition Location:

Data Source: National Museum of American History

Id Number: PH.325408Catalog Number: 325408Accession Number: 256201

Object Name: thermometer

Measurements: overall: 2 in; 5.08 cmoverall 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


Record Id: nmah_1419348

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