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GR type 483-A output meter
GR type 483-A output meter

GR type 483-A output meter

Inventory NumberWJ0410
ClassificationAudiometer
Subject
    Maker General Radio Company 1915-present
    User Harvard Psychological Laboratory founded 1891
    Place of Origin
      Dimensions22.9 x 10.8 x 11.9 cm (9 x 4 1/4 x 4 11/16 in.)
      DescriptionOutput meter, type 183-A, serial no. 28
      Signedin white on front, bottom center: OUTPUT METER / TYPE 483-A SERIAL NO. 28 / GENERAL RADIO CO. / CAMBRIDGE MASS. / PATENT APPLIED FOR
      Inscribedstamped in white on front, top and on top: HARVARD / PSYCHOLOGICAL / LABORATORY
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