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standard cell
standard cell

standard cell

Datecirca 1954
Inventory Number1997-1-0231
ClassificationStandard Cell
Subject
    Cultural Region
      Place of Origin
        Dimensions19.2 × 11 × 7.2 cm (7 9/16 × 4 5/16 × 2 13/16 in.)
        Material
          DescriptionA rectangular bakelite case, tall and thin, rests atop a slightly broader base, the edges of which are bevelled. The nameplate of the device is centered in the front.

          Sliding into the top of the case is (half of) a taller, thinner bakelite box -- it only has a bottom, a back, and a top. Strapped to the box is an H-shaped glass tube. Running up along each of the two vertical components of the tube is a thin wire. The wire coils before it connects to the bottom of a binding post fixed within the top of the box. The two binding posts emerge from the top of the box, the left is labeled '+' and the right is labeled '-'.
          Signedon faceplate: STANDARD CELL / NO. 53891 / THE EPPLEY LABORATORY, INC. / NEWPORT, R.I. / MADE IN U.S.A.
          FunctionStandard cells produce a known and stable voltage for the callibration of electrical measurement instruments.
          standard cell
          standard cell
          Jefferson Physical Laboratory, Harvard University
          Date: circa 1940
          Object number: 1997-1-0229
          standard cell
          standard cell
          Department of Physics, Harvard University
          Date: 1930-1940
          Accessories: bakelite case
          Object number: 0448
          standard cell
          standard cell
          Department of Physics, Harvard University
          Date: circa 1959
          Object number: 0443
          standard cell
          standard cell
          Date: 1940-1960
          Object number: 1997-1-0215
          standard cell
          standard cell
          Weston Electrical Instrument Corporation
          Date: circa 1920
          Object number: 0459
          transformer
          transformer
          ACME Apparatus Company
          Date: 1930-1950
          Accessories: handle; black cylindrical component; wrapping newspaper
          Object number: 1997-1-0516
          Carhart-Clark standard cell
          Carhart-Clark standard cell
          Queen & Company
          Date: circa 1904
          Object number: 0306
          standard cell
          standard cell
          American
          Date: 1910-1940
          Object number: 1997-1-0219
          part of standard cell
          part of standard cell
          American
          Date: 1890-1920
          Object number: 0305c
          standard cell
          standard cell
          American
          Date: 1910-1940
          Object number: 1997-1-0212
          standard cell
          standard cell
          Weston Electrical Instrument Corporation
          Date: circa 1900
          Accessories: a bureau of standards certificate
          Object number: 0308a
          standard cell
          standard cell
          Weston Electrical Instrument Corporation
          Date: circa 1900
          Object number: 0310