Navy detector-amplifier electron tube
date: label: date made
content: ca 1918
name: label: maker
content: National Union Radio Corp.
notes: label: Description (Brief)
content: A 4-pin base with brass shell, plastic insulator, tipped S-shaped envelope. Vertically mounted cylindrical collector. No extant maker's marks. "Low / Volt" etched on base shell.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Franklin Wingard
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.322881
label: catalog number
content: 322881
label: accession number
content: 241556
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: vacuum tube
label: Object Name
content: triode
physicalDescription: label: Measurements
content: overall: 4 1/4 in x 1 3/4 in; 10.795 cm x 4.445 cm