Colorimeter
date: label: date made
content: after 1928
name: label: maker
content: Klett Manufacturing Company
notes: label: Description
content: 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.
label: Description
content: Ref.: Robert E. Klett, “Colorimeter,” U.S. Patent 1,667,478 (1928).
label: Location
content: Currently not on view
place: label: place made
content: United States: New York, New York City
setName: label: See more items in
content: Medicine and Science: Medicine
label: See more items in
content: Health & Medicine
creditLine: label: Credit Line
content: Gift of Rockefeller Institute through Dr. Detlev W. Bronk, President
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MG.M-09357
label: catalog number
content: M-09357
label: accession number
content: 224610
label: catalog number
content: 2244610.09
objectType: label: Object Name
content: colorimeter
label: Object Name
content: hemoglobinometer
label: Object Name
content: blood testing apparatus
physicalDescription: label: Measurements
content: overall: 12 1/2 in x 4 in x 6 in; 31.75 cm x 10.16 cm x 15.24 cm