Northern Manufacturing "Marathon" type MX250 vacuum triode
name: label: maker
content: Northern Manufacturing Co.
notes: label: Description (Brief)
content: A plastic 4-pin base with S-shaped envelope, getter stain, screen-mesh grid. In original package. Stamped on base: "-X250-:"; label: "[logo] / Marathon / Triumph in Radio Tubes / Trade Mark". Reference: https://www.radiomuseum.org/tubes/tube_x-250.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.321263
label: catalog number
content: 321263
label: accession number
content: 241556
objectType: label: Object Name
content: Electron Tube, Triode
label: Object Name
content: triode
label: Other Terms
content: Electron Tube, Triode; Electron Tubes
physicalDescription: label: Physical Description
content: cardboard (box material)
label: Measurements
content: tube: 6 in x 2 5/8 in; 15.24 cm x 6.6675 cm
label: Measurements
content: box: 6 1/2 in x 3 in x 3 in; 16.51 cm x 7.62 cm x 7.62 cm