Duboscq Polariscope

Description
Jules Duboscq apprenticed with Jean Baptiste François Soleil, married his daughter, and assumed control of the scientific side of the business following Soleil’s retirement in 1849. By 1864 he was using the signature “J. Duboscq à Paris” as is found on this instrument. He remained in business until his death in 1886.
A polariscope measures the extent to which a certain amount of a substance will rotate the plane of polarization of light passing through it. This example may have been shown at the Centennial Exhibition held in Philadelphia in 1876, and may have been purchased by Joseph Henry, the first Secretary of the Smithsonian Institution.
Location
Currently not on view
Object Name
saccharimeter
date made
ca 1864-1886
maker
Duboscq, Jules
Physical Description
brass (overall material)
Measurements
overall: 14 in x 19 1/2 in; 35.56 cm x 49.53 cm
place made
France: Île-de-France, Paris
ID Number
PH*314955
catalog number
314955
accession number
212903
subject
Chemical Industry
Science & Scientific Instruments
Sugar
France
Optics
Worlds Fair
See more items in
Medicine and Science: Physical Sciences
Measuring & Mapping
Saccharimeters
Data Source
National Museum of American History, Kenneth E. Behring Center

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