Cossor type P1 triode
date: label: date made
content: ca 1922
name: label: maker
content: A. C. Cossor, Ltd.
notes: label: Description (Brief)
content: Stamped: "Cossor / Patents / 7232-3/22 / No. 282" and "A1.8.9 / A20 - 160". Unit appears to be a Cossor P1 triode, a detector and low frequency amplifier. Four brass banana pins with plastic base. Tipped T-shape glass envelope with mostly silvered interior. The "tin hat" grid is visible at top. No color coding evident. Reference: Tyne, "Saga of the Vacuum Tube," pages 371-378.
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.321043
label: catalog number
content: 321043
label: accession number
content: 241556
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: triode
physicalDescription: label: Measurements
content: overall: 4 in x 1 1/4 in; 10.16 cm x 3.175 cm