Hygrometer
Hygrometer
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- Description
- The inscription on the face of this circular metal hygrometer—“Made in Germany / D.R. P. No. 16568 / Hygrometer”—refers to the German patent issued to Otto Mithoff, an engineer in Berlin, in 1881. Other inscriptions read "Outdoor Fluctuations" and "Indoor Fluctuations" and there is a scale running from Full Saturation to Absolutely Dry. This English wording suggests that this example was designed for sale in England or the United States.
- Ref: Otto Mithoff, “Hygroskop aus der Inneren Haut der Eierschlen hergestellt,” German Patent 16568 (March 18, 1881).
- “Hygroskop von O. Mithoff in Berlin,” Dingler’s polytechnische Journal 245 (1882): 452.
- Location
- Currently not on view
- Object Name
- hygrometer
- date made
- after 1881
- place made
- Germany
- Measurements
- overall: 3 13/32 in; 8.636 cm
- overall: 1 3/4 in x 3 3/8 in; 4.445 cm x 8.5725 cm
- ID Number
- PH.315735
- accession number
- 217544
- catalog number
- 315735
- Credit Line
- U.S. Military Academy
- subject
- Science & Scientific Instruments
- See more items in
- Medicine and Science: Physical Sciences
- Data Source
- National Museum of American History
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