H.J. Green Maximum and Minimum Thermometers

This is a set of glass thermometers, each of which has a plate made of grooved aluminum. One plate is marked "H. J. GREEN B'KLYN. N.Y." and "No. 41530 SIGNAL CORPS, U.S. ARMY" and "MINIMUM" and graduated every 5 degrees Fahrenheit from 165 to +130. The other is marked "No. 30601 HENRY J. GREEN B'KLYN. N.Y." and graduated every 5 degrees Centigrade [?] from -35 to +50. Each thermometer stem has a milk glass back. The clear front of the minimum stem is graduated every degree Fahrenheit from -65 to +132. The clear front of the other stem is graduated (but not numbered) every half degree Centigrade [?] from -37.5 to +51.5.
The thermometers are held in a Townsend support marked "Julien P. Friez & Sons." This support, which was introduced around 1905, enables the maximum thermometer to be released from its normal horizontal position and whirled rapidly around, and the minimum thermometer to be tilted so that the index can slide down to the end of the spirit column.
Currently not on view
Object Name
set of two thermometers
date made
after 1890
H. J. Green
place made
United States: New York, Brooklyn
ID Number
catalog number
accession number
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
Credit Line
U.S. Signal Corps

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