Moorhead / De Forest "Atlantic-Pacific" type ER triode
date: label: date made
content: ca 1920
name: label: maker
content: Moorhead Laboratories
notes: label: Description (Brief)
content: Moorhead laboratories "Electron Relay" or ER tube. A 4-pin base with brass shell, plastic insulator, tipped T-shaped envelope. Glossy anode. Stamped on envelop: ER-535102". Tube in original box. Atlantic-Pacific Supplies, distributed by Moorhead Labs. Reference: Tyne, "Saga of the Vacuum Tube," pages 174-176.
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.322853
label: catalog number
content: 322853
label: accession number
content: 241556
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: triode
label: Object Name
content: vacuum tube
physicalDescription: label: Physical Description
content: cardboard (box material)
label: Measurements
content: overall: 4 in x 1 3/4 in; 10.16 cm x 4.445 cm