Microbalance
notes: label: Description
content: Microbalance with a “CAHN G-2 Electrobalance / VENTRON CAHN Division / Ventron Instruments Corporation, Paramount, California U.S.A. / 24690" inscription.
label: Description
content: According to a notice in Science (Feb. 8, 1957), Lee Cahn, “formerly chief project engineer for Beckman Instruments, Inc., has announced formation of the Cahn Instrument Company in Downey, Calif. The new company will design, manufacture, and sell instruments. Cahn was responsible for the design of the Beckman DK-1 and DK-2 ultraviolet-near infrared automatic recording spectrophotometers, the Beckman 1R2A and 1R4 infrared recording spectrophotometers, the Beckman EASE computer, and a number of other instruments and accessories.”
label: Description
content: Ventron Instruments was a Massachusetts firm that expanded and diversified in the 1960s.
label: Description
content: Ref: Lee Cahn, “Electrical Balance,” U.S. Patent 3,106,978 (Oct. 15, 1963); reissue 26,100 (Oct. 11, 1966).
label: Description
content: Lee Cahn, “Electromagnetic Balance,” U.S. Patent 3,224,517 (Dec. 21, 1965).
label: Description
content: Ralph H. Muller, “Lee Cahn, Inventor, Extended Uses of the Microbalance Principle,” Instrumentation 39 (1967): 121.
label: Description
content: Cahn ads in Analytical Chemistry 41 (March 1969): 122, and Science 166 (Oct. 17, 1969).
label: Location
content: Currently not on view
setName: label: See more items in
content: Medicine and Science: Chemistry
creditLine: label: Credit Line
content: Gift of Nabih I. Ghali
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1996.0012.01.1
label: accession number
content: 1996.0012
label: catalog number
content: 1996.0012.01.1
objectType: label: Object Name
content: Balance
label: Object Name
content: Microbalance
physicalDescription: label: Physical Description
content: plastic (overall material)
label: Physical Description
content: metal (overall material)
label: Measurements
content: overall: 40.6 cm x 17.7 cm x 29.8 cm; 16 in x 6 15/16 in x 11 3/4 in