Sylvania type 2A7 pentagrid converter
date: label: date made
content: ca 1934
name: label: maker
content: Sylvania Electric Products Inc.
notes: label: Description (Brief)
content: A 7-pin plastic base with top contact, domed envelope, aquadag coating around center. Stamped on base: "Sylvania / Made in U.S.A./ A / 4"; on envelope: "2A7". Reference: https://www.radiomuseum.org/tubes/tube_2a7.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 the United States Bureau of Standards, Dept. of Commerce
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.320197
label: catalog number
content: 320197
label: accession number
content: 188571
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: heptode
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 4 1/2 in x 1 1/2 in; 11.43 cm x 3.81 cm