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VTNBK 4/633
shop-built triode
VTNBK 4/633

shop-built triode

Inventory NumberVT0197
ClassificationVacuum Tube
Maker Cruft Laboratory, Harvard University founded 1914
Cultural Region
    Place of Origin
      Dimensions11.9 × 3.2 × 3.2 cm (4 11/16 × 1 1/4 × 1 1/4 in.)
      DescriptionWRAPPED CONST
      FunctionExperimental
      shop-built triode
      shop-built triode
      Cruft Laboratory, Harvard University
      Object number: VT0204
      VTNBK 6/824
      shop-built triode
      Cruft Laboratory, Harvard University
      Date: 1921
      Object number: VT1021
      Image Not Available for shop-built triode
      shop-built triode
      Cruft Laboratory, Harvard University
      Date: 1921
      Object number: VT1020
      shop-built triode
      shop-built triode
      Cruft Laboratory, Harvard University
      Object number: VT1549
      Image Not Available for shop-built experimental triode
      shop-built experimental triode
      Cruft Laboratory, Harvard University
      Object number: VT0515
      shop-built experimental triode
      shop-built experimental triode
      Cruft Laboratory, Harvard University
      Object number: VT0516
      Image Not Available for shop-built triode?
      shop-built triode?
      Cruft Laboratory, Harvard University
      Object number: VT0817
      VTNBK 2/254
      shop-built UV-201? triode
      Cruft Laboratory, Harvard University
      Object number: VT1311
      experimental triode tube
      experimental triode tube
      Cruft Laboratory, Harvard University
      Date: circa 1919
      Object number: VT0196
      experimental triode tube
      experimental triode tube
      Cruft Laboratory, Harvard University
      Date: circa 1923
      Object number: VT0190
      experimental triode tube
      experimental triode tube
      Cruft Laboratory, Harvard University
      Date: circa 1919
      Object number: VT0188
      experimental triode tube
      experimental triode tube
      Cruft Laboratory, Harvard University
      Date: circa 1920
      Object number: VT0195