Gem type 112A multivalve-type power amplifier
date: label: date made
content: ca 1927
notes: label: Description (Brief)
content: A 4-pin plastic base with 4 binding posts set in a collar. Posts are connected in pairs with metal shunts. S-shaped envelope, silvered. Label on envelope: "GEM [sunrise logo]; paper label: "For use in last audio stage only." In original box: "GEM / 112-A / GEM / Tube / Co. / New York / N.Y. / 112-A / Power Amplifier." In original box with instruction sheet. Manufacture: Gem Tube Co., NYC. This unit appears very similar to the Emerson type EMV-3 Multivalve (catalog number 321184).
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.321264
label: catalog number
content: 321264
label: accession number
content: 241556
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: vacuum tube
label: Object Name
content: triode
physicalDescription: label: Physical Description
content: cardboard (box material)
label: Measurements
content: tube: 4 1/2 in x 2 in; 11.43 cm x 5.08 cm
label: Measurements
content: box: 5 in x 2 1/2 in x 2 3/8 in; 12.7 cm x 6.35 cm x 6.0325 cm