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switchboard meter
switchboard meter

switchboard meter

Datecirca 1920
Inventory Number0483a,b
ClassificationVoltmeter
Subject
    Maker Weston Electrical Instrument Corporation founded 1888
    User Department of Physics, Harvard University founded 1884
    User Theodore Lyman IV 1874 - 1954
    Cultural Region
      Place of Origin
        Dimensions27.5 × 22.5 × 24.2 cm (10 13/16 × 8 7/8 × 9 1/2 in.)
        blue board box: 29.2 × 29.2 × 29.8 cm (11 1/2 × 11 1/2 × 11 3/4 in.)
        Material
          Accessoriesresistor
          DescriptionA fan shaped meter in a black metal case. The scale on the meter runs from 0-3000 volts. D.C. On the back of the meter are 2 extended binding posts. The multiplier resistor is a separate unit, and is contained in a perforated black metal case. There are 2 binding posts on the case.
          Signedon meter: WESTON / MODEL 273 No 13718 / WESTON ELECTRICAL INSTRUMENT CORP. / NEWARK, N.J., U.S.A
          Curatorial RemarksGift of Mr. David P. Wheatland. Originally owned by W. K. Shaw '23.
          FunctionThis is a device that directs electricity from one source to another. This specific instrument was used in a radio station for high voltage tubes.
          ProvenanceFrom the Department of Physics, Lyman Laboratory, Harvard University.
          Historical AttributesWas also used by Prof. Theodore Lyman in the 1930s as part of this experiments with his new spectrograph.
          voltmeter (direct reading laboratory standard)
          voltmeter (direct reading laboratory standard)
          Weston Electrical Instrument Corporation
          Date: late 19th Century
          Accessories: 0269b (which is a multiplier for 0269a)
          Object number: 0269a
          milli-voltmeter, direct reading laboratory standard
          milli-voltmeter, direct reading laboratory standard
          Weston Electrical Instrument Corporation
          Date: late 19th Century
          Accessories: two shunts (#0270b and #0270c); special leads
          Object number: 0270a
          voltmeter
          voltmeter
          Weston Electrical Instrument Corporation
          Date: circa 1908
          Object number: 0524
          multiplier for A.C-D.C. portable voltmeter
          multiplier for A.C-D.C. portable voltmeter
          Weston Electrical Instrument Corporation
          Date: circa 1900
          Accessories: Weston portable voltmeter, item 0279a
          Object number: 0279b
          multiplier for voltmeter
          multiplier for voltmeter
          Weston Electrical Instrument Corporation
          Date: late 19th Century
          Accessories: goes with voltmeter 0269a
          Object number: 0269b
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          Thomson voltmeter
          General Electric Company
          Date: 1910-1930
          Object number: 0216
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          Weston Electrical Instrument Corporation
          Date: circa 1930
          Object number: 0530
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          Rawson Electrical Instrument Company
          Object number: 2012-1-0040
          direct current milli-voltmeter
          direct current milli-voltmeter
          Weston Electrical Instrument Corporation
          Date: circa 1914
          Accessories: multiplier in case of instrument; standardization certificate from the Weston Laboratory, Newark, N.J. Feb.1914 on lid of wooden case
          Object number: 0278
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          millivoltmeter and case
          millivoltmeter and case
          Weston Electrical Instrument Corporation
          Date: 1900-1917
          Accessories: wooden instrument case (0526d); shunts (0526b and 0526c)
          Object number: 0526a
          milli-voltmeter, Weston DC model 1
          milli-voltmeter, Weston DC model 1
          Weston Electrical Instrument Corporation
          Date: 1911
          Accessories: shunt (0438b)
          Object number: 0438a