unidentified experimental vacuum tube
notes: label: Description (Brief)
content: Marked: "44" on stem press. No base, four uninsulated leads, bottom tubulation, fake-tipped T-shaped envelope, with two wire filaments. One filament (broken) set horizontally between two welded connectors. The filament shows melting at the break points. The other filament is a single arch filament set in welded connectors and parallel with the horizontal filament. The two were connected in the center.
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.322534
label: catalog number
content: 322534
label: accession number
content: 241556
objectType: label: Object Name
content: vacuum tube
physicalDescription: label: Measurements
content: overall: 1 in x 7/16 in; 2.54 cm x 1.11125 cm