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Image Not Available for shop-built gap discharge?
shop-built gap discharge?
Image Not Available for shop-built gap discharge?

shop-built gap discharge?

Date1922
Inventory NumberVT1297
ClassificationVacuum Tube
Maker Cruft Laboratory, Harvard University founded 1914
Cultural Region
    Place of Origin
      Dimensions17.6 × 2.9 × 2.9 cm (6 15/16 × 1 1/8 × 1 1/8 in.)
      Description"CF VT0212 1MM GAP ""HYDROGEN FEB 7 1922"""
      FunctionExperimental
      experimental spark gap discharge tube
      experimental spark gap discharge tube
      Cruft Laboratory, Harvard University
      Date: 1921
      Object number: VT0212
      Image Not Available for shop-built diode ??
      shop-built diode ??
      Cruft Laboratory, Harvard University
      Object number: VT0216
      VTNBK 6/794
      shop-built diode ??
      Cruft Laboratory, Harvard University
      Object number: VT0215
      VTNBK 2/268
      shop-built discharge tube?
      Cruft Laboratory, Harvard University
      Object number: VT1298
      VTNBK 4/624
      shop-built diode, multi-anode
      Cruft Laboratory, Harvard University
      Date: 1938
      Object number: VT0224
      VTNBK 5/654
      shop-built FIL TEST
      Cruft Laboratory, Harvard University
      Date: 1929
      Object number: VT0227
      VTNBK 5/654
      shop-built FIL TEST
      Cruft Laboratory, Harvard University
      Date: 1929
      Object number: VT0228
      Image Not Available for shop-built FIL TEST?
      shop-built FIL TEST?
      Cruft Laboratory, Harvard University
      Date: 1936
      Object number: VT0225
      Image Not Available for shop-built FIL TEST
      shop-built FIL TEST
      Cruft Laboratory, Harvard University
      Object number: VT0219
      VTNBK 5/646
      shop-built diode
      Cruft Laboratory, Harvard University
      Date: 1929
      Object number: VT0200
      VTNBK 6/832
      shop-built solenoid
      Cruft Laboratory, Harvard University
      Object number: VT0251
      shop-built triode
      shop-built triode
      Cruft Laboratory, Harvard University
      Object number: VT0204