Aspiration Psychrometer

Aspiration Psychrometer

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Description
In the late 1880s, a German meteorologist named Adolph Richard Assmann designed an aspiration instrument with a fan to draw air past the wet- and dry-bulb thermometers of a common psychrometer. Assmann also enclosed the device in double-walled ducts of polished metal designed to minimize the effect of radiation. This form long remained in widespread use.
The clockwork housing of this example is marked "R. Fuess / Berlin-Steglitz / No. 189500." The back side of the thermometer scales are marked "CENTIGRADE R. FUESS, BERLIN-STEGLITZ JENAER Normaliglas 16111."
Ref: R. Fuess, Liste D2 über Thermometer, Psychrometer, Hygrometer und Hypsometer (Steglitz bei Berlin, 1910), p. 6.
Location
Currently not on view
Object Name
aspiration psychrometer
date made
after 1891
maker
R. Fuess
Measurements
overall: 16 3/4 in; 42.545 cm
overall: 5 3/8 in x 16 5/8 in x 5 1/4 in; 13.6525 cm x 42.2275 cm x 13.335 cm
ID Number
1988.0794.01
catalog number
1988.0794.01
accession number
1988.0794
Credit Line
Freer Gallery of Art
See more items in
Medicine and Science: Physical Sciences
Measuring & Mapping
Thermometers and Hygrometers
Data Source
National Museum of American History
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