Siemens & Halske type A vacuum triode
date: label: date made
content: ca 1917
name: label: maker
content: Siemens & Halske
notes: label: Description (Brief)
content: Siemens & Halske serial number 12949, maker's tag attached on sealed wire. Double-ended, clip-in bases, flat metal grid, cylindrical envelope. Paper label reads: "A / [??] 949". References: Tyne, "Saga of the Vacuum Tube," pages 240-242; https://www.radiomuseum.org/tubes/tube_a.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.320189
label: catalog number
content: 320189
label: accession number
content: 188571
objectType: label: Object Name
content: vacuum triode
label: Object Name
content: electron tube
label: Object Name
content: triode
physicalDescription: label: Measurements
content: overall: 4 1/4 in x 2 in x 1 1/2 in; 10.795 cm x 5.08 cm x 3.81 cm