Marconi-Osram type VM-54 vacuum tube
date: label: date made
content: 1931
name: label: maker
content: Marconi-Osram Valve Co., Ltd.
notes: label: Description (Brief)
content: Perforated metal casing, 4-volt type lamp filament, indirectly heated cathode, variable Mu type. Plastic base insulator with 5 banana pins. Unit in original box. Marked: "Patented Made in England" and "Made in England / 3 / VM [?] Reference: Thermionic Valves, pages 52-53.
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.322626
label: catalog number
content: 322626
label: accession number
content: 241556
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: vacuum tube
physicalDescription: label: Measurements
content: overall: 4 5/8 in x 1 1/4 in; 11.7475 cm x 3.175 cm