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GR type 107-E variable inductor
GR type 107-E variable inductor

GR type 107-E variable inductor

Dateearly 20th Century
Inventory NumberRS0257
ClassificationInductor
Subject
    Maker General Radio Company 1915-present
    Cultural Region
      Place of Origin
        Dimensions18 x 15 x 15 cm (7 1/16 x 5 7/8 x 5 7/8 in.)
        Material
          DescriptionA General Radio type 107-E, serial number 688, variable inductor, mounted in a walnut cabinet with bakelite front/knob and brass fixtures.
          Signedetched and white filled on front: VARIABLE INDUCTOR / TYPE 107 E. SERIAL No.688 / GENERAL RADIO CO. / CAMBRIDGE, MASS.
          GR type 107-E variable inductor
          GR type 107-E variable inductor
          General Radio Company
          Date: 1940-1945
          Object number: RS0256
          GR type 226 125 mh variable inductor
          GR type 226 125 mh variable inductor
          General Radio Company
          Object number: RS0638
          Variable Inductor, 3MH Type 226
          Variable Inductor, 3MH Type 226
          General Radio Company
          Object number: RS0639
          Variable and Mutual Tuning Inductor, c. 1910.
          Variable and Mutual Tuning Inductor, c. 1910.
          Date: circa 1910
          Object number: RS0873
          Variable Inductor, 3MH, Type 226
          Variable Inductor, 3MH, Type 226
          General Radio Company
          Object number: RS0640
          GR type 381 vacuum tube oscillator
          GR type 381 vacuum tube oscillator
          General Radio Company
          Date: circa 1930
          Object number: RS0252
          universal L-R-C bridge 293-A
          universal L-R-C bridge 293-A
          General Radio Company
          Object number: RS0241
          wave analyzer
          wave analyzer
          General Radio Company
          Date: mid 20th Century
          Object number: RS0213
          mutual conductance meter
          mutual conductance meter
          General Radio Company
          Object number: RS0226
          precision wavemeter 224
          precision wavemeter 224
          General Radio Company
          Date: early 20th Century
          Object number: RS0243a
          precision wavemeter, General Radio model No. 224, Serial No. 113 [?]
          precision wavemeter, General Radio model No. 224, Serial No. 113 [?]
          General Radio Company
          Date: early 20th Century
          Object number: RS0243b
          audio frequency meter 434-B
          audio frequency meter 434-B
          General Radio Company
          Date: c. 1930
          Object number: RS0247