From The Collaborative International Dictionary of English v.0.48:

Graphoscope \Graph"o*scope\, n. [Gr. gra`fein to write +
   1. An optical instrument for magnifying engravings,
      photographs, etc., usually having one large lens and two
      smaller ones.
      [1913 Webster]

   2. An optical device for showing (or photographing) an image
      when projected upon the atmosphere as a screen.
      [Webster 1913 Suppl.]
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