Skip to main content

mutual conductance meter

Inventory NumberRS0226
ClassificationMeasuring Equipment
Maker General Radio Company 1915-present
Cultural Region
    Place of Origin
      Dimensions12.7 x 25.6 x 25.4 cm (5 x 10 1/16 x 10 in.)
      Material
        DescriptionA General Radio Company type 443, serial number 14, mutual conductance meter, mounted in walnut cabinet with metal front, glass fixtures and bakelite knobs.
        Signedethced and white filled on top panel, center: MUTUAL CONDUCTANCE METER / TYPE 443 SERIAL NO. 14 / GENERAL RADIO COMPANY / CAMBRIDGE, MASS. on face of meter: WESTON ELECTRICAL INSTRUMENT CORP., NEWARK, N.J., U.S.A. / VOLTS D.C. / WESTON / MODEL 506 TYPE A-07 / PATENTS PENDING
        Inscribedblack plate on side: GIFT OF / MR. GEO. E. CABOT / BOSTON
        audio frequency meter 434-B
        General Radio Company
        Date: c. 1930
        Object number: RS0247
        frequency meter-monitor 535-A
        General Radio Company
        Date: early 20th Century
        Object number: RS0238
        wave analyzer
        General Radio Company
        Date: mid 20th Century
        Object number: RS0213
        universal L-R-C bridge 293-A
        General Radio Company
        Object number: RS0241
        precision wavemeter 224
        General Radio Company
        Date: early 20th Century
        Object number: RS0243a
        precision wavemeter, General Radio model No. 224, Serial No. 113 [?]
        General Radio Company
        Date: early 20th Century
        Object number: RS0243b
        impedance bridge 650-A
        General Radio Company
        Date: c. 1930
        Object number: RS0248
        decade bridge, 193
        General Radio Company
        Date: early 20th Century
        Object number: RS0253
        standard inductance, 10 mH 106J
        General Radio Company
        Date: early 20th Century
        Object number: RS0254
        standard inductance 106G
        General Radio Company
        Date: early 20th Century
        Object number: RS0255
        GR type 107-E variable inductor
        General Radio Company
        Date: 1940-1945
        Object number: RS0256
        GR type 107-E variable inductor
        General Radio Company
        Date: early 20th Century
        Object number: RS0257