Sal-Mar Labs type JAN-CAGC 872A / VT42A mercury vapor rectifier
date: label: date made
content: ca 1935
notes: label: Description (Brief)
content: A half-wave mercury vapor rectifier (also called a high vacuum diode). Four-pin base with metal shell, ceramic insulator. Top contact. Mercury specks inside unit. Printed on base: "JAN-CAGC-872A / VT-42A / Made in U.S.A. / Sal-Mar Labs., Inc."; inked on press "4153-A". T-shaped envelope. Reference: https://www.radiomuseum.org/tubes/tube_vt42a.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.323045
label: catalog number
content: 323045
label: accession number
content: 241556
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: rectifier
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 8 1/8 in x 2 1/4 in; 20.6375 cm x 5.715 cm