Friez Hygrograph

This is marked "JULIEN P. FRIEZ & SONS, BELFORT METEOROLOGICAL OBSERVATORY, 1230 E. BALTIMORE STREET, BALTIMORE, M.D., U.S.A." and "HYGROGRAPH, Type ML 16, SERIAL 74865, SIGNAL CORPS, U.S. ARMY, ORDER 110418 DATE 2.8.23." The firm began trading under this name in 1914. This example came to the Smithsonian in 1923.
Currently not on view
Object Name
date made
Friez, Julien P.
Julien P. Friez & Sons
place made
United States: Maryland, Baltimore
ID Number
accession number
catalog number
See more items in
Medicine and Science: Physical Sciences
Measuring & Mapping
Thermometers and Hygrometers
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
U.S. Signal Corps

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