display of four Western Electric rectifier tubes: 3B24, 267B, 304A, 371B
name: label: maker
content: Western Electric
label: maker
content: National Union Radio Corp.
notes: label: Description (Brief)
content: A wooden rail with four electron tubes set in drilled holes. Penciled on front: "Western Electric Rectifiers". Two tubes became separated from the rail and received other catalog numbers. The four tubes include types 3B24 (catalog number 321269), 267B, 304A, 371B (catalog number 320375).
label: Description (Brief)
content: Tube type 267B - a four-pin brass base with ceramic insulator, top contact, T-shaped envelope. Stamped on base: "Western Electric / U.S.A. / 267B", penciled on bottom: "Eng. 8".
label: Description (Brief)
content: Tube type 304A - a four-pin plastic base with two top contacts, S-shaped envelope. Stamped on envelope: "Western Electric / U.S.A. / 304A / [17?] 026".
label: Description (Brief)
content: Tube type 371B - Aluminum base shell with ceramic insulator, 4 short pins, top contact, T-shaped envelope. Stamped on envelope: "Made in U.S.A. by / National Union / for / Western Electric / 371B / VT-166", inked on press: "A2186". Reference: https://www.radiomuseum.org/tubes/tube_371b.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.241556.629
label: accession number
content: 241556
label: catalog number
content: 241556.629
label: model number
content: VT-166
label: model number
content: 371B
label: model number
content: 3B24
label: model number
content: 267B
label: model number
content: 304A
objectType: label: Object Name
content: electron tube display
label: Object Name
content: rectifier
physicalDescription: label: Measurements
content: overall: 9 in x 12 in x 2 1/2 in; 22.86 cm x 30.48 cm x 6.35 cm
label: Measurements
content: 304a: 6 in x 2 1/2 in; 15.24 cm x 6.35 cm
label: Measurements
content: 267b: 8 in x 2 1/4 in; 20.32 cm x 5.715 cm
label: Measurements
content: 371b: 8 3/8 in x 2 1/4 in; 21.2725 cm x 5.715 cm
label: Measurements
content: 3b24: 4 1/4 in x 1 1/2 in; 10.795 cm x 3.81 cm