Perryman type RH201A triode
date: label: date made
content: 1928
name: label: maker
content: Perryman Electric Company
notes: label: Description (Brief)
content: A 4 long-pin ceramic base with tipless S-shaped envelope, silvered. Stamped on base: "Perryman / Trade [logo] Mark / Type R.H. 201A / Amplifier & Detector / Genuine Isolantite Base." Paper label reads: "Buy or Cash and Save / Tested for Oscillation, Filament & General Condition / Date Aug 10 1928 / All tubes are sold subject to Manufacturers adjustment / Perfection Radio Stores / New York - Brooklyn / "You get protection at Perfection"." Reference: Tyne, "Saga of the Vacuum Tube," page 360; https://www.radiomuseum.org/tubes/tube_rh201a.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 Henry Wirth
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.312374
label: catalog number
content: 312374
label: accession number
content: 163277
objectType: label: Object Name
content: Electron Tube, Triode
label: Object Name
content: triode
label: Other Terms
content: Electron Tube, Triode; Electron Tubes
physicalDescription: label: Physical Description
content: glass (overall material)
label: Physical Description
content: isolantite (overall material)
label: Physical Description
content: metal (overall material)
label: Measurements
content: overall: 4 1/4 in x 1 3/4 in; 10.795 cm x 4.445 cm