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Klett Colorimeter

Klett Colorimeter

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Description
Robert E. Klett was a native of Berlin who immigrated to the U.S. in 1905, established the Klett Manufacturing Co. in New York in 1916, and specialized in Duboscq-type colorimeters that, because of the war in Europe, were no longer available in the United States. This example is based on his 1928 patent for a colorimeter that, with a reference table built into the base, was said to be “easier to operate, more rapid, less tiring on the operator's eyes” than the standard model. It was also adapted for operation with either natural or artificial light. It is marked “KLETT BIO / PAT’D APR. 24, 1928 / NO. 1,667,478 / KLETT MFG. CO. INC. / NEW YORK / U.S.A.” The rotating scale at the bottom correlates color with the amount of hemoglobin per 100 cc of whole blood.
Ref.: Robert E. Klett, “Colorimeter,” U.S. Patent 1,667,478 (1928).
Location
Currently not on view
Object Name
Colorimeter
date made
after 1928
maker
Klett Manufacturing Company
place made
United States: New York, New York City
Measurements
overall: 12 1/2 in x 4 in x 6 in; 31.75 cm x 10.16 cm x 15.24 cm
ID Number
MG.M-09357
catalog number
M-09357
accession number
224610
catalog number
2244610.09
Credit Line
Gift of Rockefeller Institute through Dr. Detlev W. Bronk, President
See more items in
Medicine and Science: Medicine
Health & Medicine
Data Source
National Museum of American History
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