De Forest spherical "Audion" radio tube
name: label: maker
content: De Forest Radio Telephone & Telegraph Co.
notes: label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.320362
label: catalog number
content: 320362
label: accession number
content: 242270
objectType: label: Object Name
content: Electron Tube , Triode
label: Object Name
content: triode
label: Other Terms
content: Electron Tube , Triode; Electron Tubes
physicalDescription: label: Measurements
content: overall: 3 3/4 in x 2 in; 9.525 cm x 5.08 cm