Osram type Z21 screen pentode
name: label: maker
content: Marconi-Osram Valve Co., Ltd.
notes: label: Description (Brief)
content: A 4-pin plastic base with top contact, banana pins, glass S-shaped envelope. A lead emerges from the base and is attached to the envelope with an adhesive ring. Stamped: "Made & Patented in England / Z21 / [....]". Reference: https://www.radiomuseum.org/tubes/tube_z21.html.
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.311588
label: catalog number
content: 311588
label: accession number
content: 146541
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: pentode
physicalDescription: label: Measurements
content: overall: 4 3/4 in x 1 1/2 in; 12.065 cm x 3.81 cm