H. J. Green Maximum and Minimum Soil Thermometer

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Charles F. Marvin and Milton Whitney, both of the U.S. Weather Bureau, introduced this type of Combined Maximum and Minimum Soil Thermometer in 1893. This example has a wood and brass frame. A brass plate on the frame is marked "H. J. GREEN B'KLYN N.Y." and "No. 8 U.S. WEATHER BUREAU" and graduated every 5 degrees Fahrenheit from -20 to +170. The glass thermometer inside the frame is filled with mercury and alcohol. The back of the stem is milk glass. The clear front is marked "U.S. 8" and graduated every degree Fahrenheit from -20 to +180. The Weather Bureau transferred it to the Smithsonian in 1954.
Ref: C. F. Marvin and M. Whitney, "Instructions for Use of Combined Maximum and Minimum Soil Thermometer," U.S. Weather Bureau Circular G (1894).
Currently not on view
date made
after 1890
H. J. Green
place made
United States: New York, Brooklyn
overall: 23 7/16 in x 1 1/2 in; 59.53125 cm x 3.81 cm
ID Number
catalog number
accession number
Credit Line
U.S. Weather Bureau
U.S. Weather Bureau
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Medicine and Science: Physical Sciences
Measuring & Mapping
Thermometers and Hygrometers
Data Source
National Museum of American History