Microammeter
name: label: maker
content: Beckman Instruments
notes: label: Description
content: Arnold O. Beckman, a professor of chemistry at the California Institute of Technology, in Pasadena, established the National Technical Laboratories in 1935. That firm developed this type of microammeter in 1943, at the behest of and in conjunction with scientists working on the Manhattan Project dur-ing World War II.
label: Description
content: A tag indicates that this example was still being used as Radiation Monitor in 1967. The inscription on a metal plate on a small door reads “A Beckman Instrument / Patents Issued And Pending / Serial No. 7660 / Model RXG / Manufactured In U.S.A. By / National Technical Laboratories – South Pasadena, Calif.”
label: Location
content: Currently not on view
place: label: place made
content: United States: California, Pasadena
setName: label: See more items in
content: Medicine and Science: Modern Physics
creditLine: label: Credit Line
content: U.S. Department of Energy
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1993.0138.08
label: catalog number
content: 1993.0138.08
label: accession number
content: 1993.0138
objectType: label: Object Name
content: Ammeter
physicalDescription: label: Physical Description
content: metal (overall material)
label: Physical Description
content: glass (overall material)
label: Measurements
content: average spatial: 41.4 cm x 33.2 cm x 29.7 cm; 16 5/16 in x 13 1/16 in x 11 11/16 in
label: Measurements
content: average spatial: 41.435 cm x 33.338 cm x 29.528 cm; 16 5/16 in x 13 1/8 in x 11 5/8 in