Metropolitan-Vickers type SP55 "Cosmos" triode
date: label: date made
content: 1926
name: label: maker
content: Metropolitan-Vickers Electrical Co., Ltd.
notes: label: Description (Brief)
content: Metropolitan-Vickers Electrical Co., Ltd. (UK). Marked: "Cosmos / 6 [MV logo] B / Shortpath / S.P. 55 / O". Tipped P-shaped glass envelope, base missing, four leads. Reference: Tyne, "Saga of the Vacuum Tube," page 373-374.
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.322508
label: catalog number
content: 322508
label: accession number
content: 241556
objectType: label: Object Name
content: triode
label: Object Name
content: vacuum tube
physicalDescription: label: Measurements
content: overall: 3 1/2 in x 1 3/4 in; 8.89 cm x 4.445 cm