Valvo type DDD25 vacuum tube
date: label: date made
content: ca 1943
name: label: maker
content: Valvo, GmbH
notes: label: Description (Brief)
content: An 8-pin metal base with central post and glass insulators, tipless T-shaped envelope with silvered top. Stamped on top: "Valvo / DDD25", on side: "Wehrmacht / BAL / [??]00 / 22[??] / 1844 E" . Reference: https://www.radiomuseum.org/tubes/tube_ddd25.html.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.323726
label: catalog number
content: 323726
label: accession number
content: 254076
label: accession number
content: 257456
objectType: label: Object Name
content: Galvanometer
label: Object Name
content: vacuum tube
label: Other Terms
content: Galvanometer; Measuring Devices
physicalDescription: label: Measurements
content: overall: 2 3/4 in x 1 1/4 in; 6.985 cm x 3.175 cm