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Microvolter Volt Source
Microvolter Volt Source

Microvolter Volt Source

Inventory NumberWJ0430
ClassificationVoltage Source
Subject
    Maker General Radio Company 1915-present
    Place of Origin
      Dimensions19.7 x 25.4 x 14.9 cm (7 3/4 x 10 x 5 7/8 in.)
      AccessoriesMirror found with object, not sure if it belongs to this object.
      Signedin white on front, top: AUDIO FREQUENCY / MICROVOLTER / TYPE 546-1 SERIAL NO. 169 / GENERAL RADIO CO. / CAMBRIDGE MASS. U.S.A.
      Audio-Output Amplifier
      Federal Television Corporation
      Accessories: 2 black cords with 2-pronged plugs and cylindrical sockets. Found with object during FAE inventory, however it is unclear whether they belong with the object or not.
      Object number: WJ0407
      Cords found with Audio-Output Amplifier
      Federal Television Corporation
      Accessories: 2 black cords with 2-pronged plugs and cylindrical sockets. Found with object during FAE inventory, however it is unclear whether they belong with the object or not.
      Object number: WJ0407a
      Barth's speed slide rule
      Carl G. Barth
      Date: copyright 1902
      Accessories: bottom of storage box; Instruction booklet (belongs to a different instrument, a time slide rule)
      Object number: 1990-5-0002
      smaller shunt for millivoltmeter
      Weston Electrical Instrument Corporation
      Date: 1900-1917
      Accessories: belongs with voltmeter (0526a); other accessories are another shunt (0526c) and the box (0526d)
      Object number: 0526b
      larger shunt for millivoltmeter
      Weston Electrical Instrument Corporation
      Date: 1910-1917
      Accessories: belongs with voltmeter (0526a); other accessories are another shunt (0526b) and the box (0526d)
      Object number: 0526c
      globe sundial
      American
      Date: circa 1750
      Accessories: Formerly with stand that now belongs, with its pair, to the terrestial globe (inv. 1997-1-2060b).
      Object number: 7402
      tinfoil recording
      American
      Date: circa 1878
      Accessories: belongs to recorder (8501a); spare diaphragm made by David Osier is on file.
      Object number: 8501b
      Unknown - wooden box with switches
      Leeds & Northrup Company
      Object number: WJ0431
      decade voltage divider 654-A
      General Radio Company
      Object number: RS0258
      Voltage Divider, Type 554, General Radio Co.
      General Radio Company
      Object number: RS1074
      Voltage Divider
      General Radio Company
      Object number: WJ0454
      sextant with double scale
      Ebenezer Hoppé
      Date: circa 1809
      Accessories: On 6/23/98, a telescope was found (1998-1-1412) that may belong to part of this sextant.
      Object number: 5309