- Lambrecht’s Polymeter is a multi-purpose meteorological instrument consisting of a mercury thermometer for temperature (missing in this example) and a hair hygrometer for humidity. The inscriptions on the face of this example read "LAMBRECHT'S POLYMETER" and "JULIEN P. FRIEZ / Meteorological Instruments and Apparatus BALTIMORE (Md.) U.S.A."
- Wilhelm Lambrecht (1834-1904), a mechanical, optical and meteorological instrument maker in Göttingen, designed this type of hair hygrometer around 1880. The firm remains in business, advertising as "The Weather Specialists Since 1859."
- Julien P. Friez opened a workshop in Baltimore in 1890; he took his elder son into partnership in 1913 and began trading as J.P. Friez & Son. In 1895, he announced in the American Meteorological Journal that he was “Special American Agent for Lambrecht’s famous Polymeter, the best single instrument ever invented for making FROST AND WEATHER FORECASTS.”
- Ref: “The Polymeter” in Julien P. Friez, Illustrated Catalogue of Meteorological Instruments and Apparatus (Baltimore, 1893), pp. 35-37.
- Currently not on view
- Object Name
- dew point apparatus
- date made
- Lambrecht, Wilhelm
- Friez, Julien P.
- place made
- Germany: Lower Saxony, Göttingen
- United States: Maryland, Baltimore
- overall: 9 7/16 in x 3 1/8 in x 1 in; 23.97125 cm x 7.9375 cm x 2.54 cm
- ID Number
- accession number
- catalog number
- Credit Line
- U.S. Weather Bureau
- Data Source
- National Museum of American History
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