Osram type QP21 double pentode
date: label: date made
content: ca 1936
name: label: maker
content: Marconi-Osram Valve Co., Ltd.
notes: label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from McMurdo Silver Corp., thru McMurdo Silver
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.311590
label: catalog number
content: 311590
label: accession number
content: 146541
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: pentode
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 4 1/2 in x 2 in; 11.43 cm x 5.08 cm