ballon meteorograph

ballon meteorograph

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Balloon meteorograph designed by S. P. Fergusson of the U.S. Weather Bureau in 1919. Three styli connected to a Bourdon barometer, a bimetallic thermometer, and hair hygrometer scribed readings onto a clockwork drum. Marked, "Friez Baltimore Reg. U.S. Patent Office." The internal mechanism is similar to an 1896 instrument made by Richard Brothers of Paris for American meteorologist Abbot Lawrence Rotch [1861-1912], founder and director of Blue Hill Observatory near Boston, Massachusetts. (See PH. 308209).
J. L. Dubois, R. P. Multhauf, and C. A. Ziegler "The Invention and Development of the Radiosonde with A Catalog of Upper-Atmospheric Telemetering Probes in the National Museum of American History, Smithsonian Institution", p.12 (
Currently not on view
Object Name
meteorograph, balloon
overall: 3 1/2 in x 4 in x 8 in; 8.89 cm x 10.16 cm x 20.32 cm
overall: 3 1/2 in x 4 in x 8 in; 8.89 cm x 10.16 cm x 20.32 cm
ID Number
catalog number
accession number
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Medicine and Science: Physical Sciences
Data Source
National Museum of American History
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