Marconi-Osram type R5 triode
date: label: date made
content: ca 1917
name: label: maker
content: Marconi-Osram Valve Co., Ltd.
notes: label: Description (Brief)
content: Marconi-Osram type R-5 vacuum tube in original box. Marked: "Marconi Valve / Made at the Osram Lamp Works / Covered by Various Patents / Made in England. / R.5 / N / 342". A bakelite base with grid and anode connections on either side, filament connections are made to the metal tips on the tube ends. References: Tyne, "Saga of the Vacuum Tube," pages 220-223; https://www.radiomuseum.org/tubes/tube_r5_osram.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 Franklin Wingard
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.322492
label: catalog number
content: 322492
label: accession number
content: 241556
objectType: label: Object Name
content: triode
label: Object Name
content: vacuum tube
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Physical Description
content: paper (box material)
label: Measurements
content: box: 5 1/2 in x 3 1/4 in x 3 in; 13.97 cm x 8.255 cm x 7.62 cm
label: Measurements
content: unit: 3 3/8 in x 1 1/4 in; 8.5725 cm x 3.175 cm