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GR type 247 variable air condenser
GR type 247 variable air condenser

GR type 247 variable air condenser

Datecirca 1925
Inventory NumberRS0436
ClassificationCapacitor
Subject
    Maker General Radio Company 1915-present
    Place of Origin
      Dimensions9.6 x 11 x 11 cm (3 3/4 x 4 5/16 x 4 5/16 in.)
      DescriptionWave length tuner ?, Type 247, General Radio Co., (General Radio-Cruft) "RP3-No.3" in white ink
      In Collection(s)
      Signedetched on dial: GENERAL RADIO CO. / CAMBRIDGE, MASS. / TYPE 247
      Inscribedpainted in white on top panel: RP3-No. 3 carved in base: 16/17 written on base: R40
      Historical AttributesCruft
      GR Wavemeter variable air condenser for use with type 247 filter
      GR Wavemeter variable air condenser for use with type 247 filter
      General Radio Company
      Date: circa 1925
      Object number: RS0434
      rotary variable air condensers in storage box
      rotary variable air condensers in storage box
      General Radio Company
      Date: early 20th Century
      Object number: RS0503
      Wavelength Tuner?, Type 247-w 1/4?, General Radio Co.
      Wavelength Tuner?, Type 247-w 1/4?, General Radio Co.
      General Radio Company
      Object number: RS0433
      GR type 247-W 1/4 filter
      GR type 247-W 1/4 filter
      General Radio Company
      Date: circa 1925
      Object number: RS0432
      GR type 101-L variable air condenser
      GR type 101-L variable air condenser
      General Radio Company
      Date: circa 1916
      Object number: RS0560
      GR type 226 125 mh variable inductor
      GR type 226 125 mh variable inductor
      General Radio Company
      Object number: RS0638
      GR type 101-L variable air condenser
      GR type 101-L variable air condenser
      General Radio Company
      Date: circa 1915
      Object number: RS0563
      GR type 101-L variable air condenser
      GR type 101-L variable air condenser
      General Radio Company
      Date: circa 1915
      Object number: RS0564
      GR type 219-K decade condenser
      GR type 219-K decade condenser
      General Radio Company
      Date: circa 1930
      Object number: RS0683
      GR type 219-G decade condenser
      GR type 219-G decade condenser
      General Radio Company
      Date: circa 1930
      Object number: RS0684
      GR type 539-B variable air condenser
      GR type 539-B variable air condenser
      General Radio Company
      Date: circa 1930
      Object number: RS0558
      GR type 722-D precision variable capacitor
      GR type 722-D precision variable capacitor
      General Radio Company
      Date: circa 1955
      Accessories: 2 small rusted keys.
      Object number: RS0225