Moorhead type ER tubular "Audion" radio tube
date: label: date made
content: ca 1919
name: label: maker
content: Moorhead Laboratories
notes: label: Description (Brief)
content: Early Moorhead "Electron Relay" tube. "ER" stamped on shield. clear tubular envelope, end-tipped, two leads emerge from one end, 3 from the other, cloth insulation. Reference: Tyne, "Saga of the Vacuum Tube," page 168-69.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Marshall N. Waterman, Frances Waterman and Ruth Waterman Ritch
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.313468
label: catalog number
content: 313468
label: accession number
content: 187068
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 1 in; 9.525 cm x 2.54 cm