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GR audibility meter
GR audibility meter

GR audibility meter

Inventory NumberRS0644
ClassificationMeter
Maker General Radio Company 1915-present
Place of Origin
    Dimensions9 x 19 x 19 cm, 2 lb. (3 9/16 x 7 1/2 x 7 1/2 in., 0.9 kg)
    DescriptionAudibility meter - General Radio, Cambridge. General Radio - Cruft
    Signedetched on top panel: AUDIBILITY METER
    GR audibility meter
    GR audibility meter
    General Radio Company
    Object number: RS0642
    GR type 164 audibility meter
    GR type 164 audibility meter
    General Radio Company
    Object number: RS0468
    GR type 164-B audibility meter
    GR type 164-B audibility meter
    General Radio Company
    Object number: RS0641
    GR type 164 audibility meter
    GR type 164 audibility meter
    General Radio Company
    Object number: RS0643
    GR type 547-A modulation meter
    GR type 547-A modulation meter
    General Radio Company
    Accessories: 1 battey (removed during FAE inventory).
    Object number: RS0344
    shop built GR type 108 wave meter
    shop built GR type 108 wave meter
    Cruft Laboratory, Harvard University
    Date: circa 1915
    Accessories: coil
    Object number: RS0668
    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
    GR type 247-W 1/4 filter
    GR type 247-W 1/4 filter
    General Radio Company
    Date: circa 1925
    Object number: RS0432
    Volt/Ohm Meter, R.C.A., Model WV-87A
    Volt/Ohm Meter, R.C.A., Model WV-87A
    Radio Corporation of America
    Object number: RS0716
    Meter, Voltmeter, Minneapolis-Honeywell Reg. Co., "MesurMatic" Model VDC-2
    Meter, Voltmeter, Minneapolis-Honeywell Reg. Co., "MesurMatic" Model VDC-2
    Minneapolis-Honeywell Regulator Company
    Object number: RS0715
    GR type 539-B variable air condenser
    GR type 539-B variable air condenser
    General Radio Company
    Date: circa 1930
    Object number: RS0558
    Wavemeter, Direct Reading, Type S.C. R.60; General Radio Co.
    Wavemeter, Direct Reading, Type S.C. R.60; General Radio Co.
    General Radio Company
    Object number: RS0783