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A colorimeter compares the color of a sample with that of a standard, often for industrial purposes. Louis Jules Duboscq, a major optical instrument maker in Paris, devised an important early form. This example is of that sort. Joseph Henry, the physicist who served as founding Secretary of the Smithsonian, probably acquired it for the Insitution.
Ref: Deborah J. Warner, “The Duboscq Colorimeter,” Bulletin of the Scientific Instrument Society 88 (2006): 68-70.
Currently not on view
Object Name
Associated Place
United States: New Jersey
base: 6 in x 7 in; 15.24 cm x 17.78 cm
overall: 19 in x 5 1/2 in; 48.26 cm x 13.97 cm
overall: 19 3/16 in x 7 1/4 in x 7 3/8 in; 48.73625 cm x 18.415 cm x 18.7325 cm
ID Number
catalog number
accession number
Credit Line
Transfer from Smithsonian Institution Astrophysical Observatory
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Medicine and Science: Chemistry
Data Source
National Museum of American History
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