Simplex type 2-D-21 thyratron
name: label: maker
content: Simplex Radio Co.
notes: label: Description (Brief)
content: A 7-pin glass base with tipped T-shaped envelope. Miniature tube. Stamped: "2D21 / Simplex / Made in U.S.A.” Donor’s card reads: “Thyratron, gas tetrode, made by Simplex Radio Co. for use in industrial control equipment. Heater type: 6.3 volts at .6 ampere.” See also: https://www.radiomuseum.org/tubes/tube_2d21.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 Paul G. Watson
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.324853
label: catalog number
content: 324853
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: thyratron
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 2 in x 5/8 in; 5.08 cm x 1.5875 cm