Abbé Refractometer

Description
A refractometer measures the refractive index of stuff. Ernst Abbé built his first one in 1869 and used it in his work designing lenses for the Carl Zeiss Optical Works in Jena, Germany. Zeiss began advertising Abbé refractometers in 1881. This example is marked “N˚ 148 Carl Zeiss Jena” and “Germany.” Zeiss records indicate that it was delivered to J. W. Queen & Co., an important instrument dealer in Philadelphia on July 2, 1890. It was then acquired soonafter by the Department of Chemical Engineering at the University of Michigan, and came to the Smithsonian in 1961.
Location
Currently not on view
date made
after 1890-07-02
maker
Carl Zeiss
place made
Deutschland: Thüringen, Jena
Measurements
overall: 28 cm x 11.2 cm x 10 cm; 11 1/32 in x 4 13/32 in x 3 15/16 in
overall: 11 in x 4 3/8 in x 3 1/4 in; 27.94 cm x 11.1125 cm x 8.255 cm
ID Number
PH.319718
accession number
239025
catalog number
319718
Credit Line
University of Michigan, Department of Chemical Engineering
subject
Optics
Chemistry
Germany
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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