
1) Optical device
Found on
https://www.crosswordclues.com/clue/graphoscope

A graphoscope was a 19th-century device used in parlors in order to enhance the viewing of photographs and text. These novelty items consisted of a single magnifying glass, often in a wooden frame, in an overall construction that could collapse into a compact rectangular form. A photo/card holder was usually also included. A KOMBI camera often had...
Found on
http://en.wikipedia.org/wiki/Graphoscope

• (n.) An optical instrument for magnifying engravings, photographs, etc., usually having one large lens and two smaller ones. • (n.) An optical device for showing (or photographing) an image when projected upon the atmosphere as a screen.
Found on
http://thinkexist.com/dictionary/meaning/graphoscope/
Graph'o·scope noun [ Greek
gra`fein to write +
-scope .] An optical instrument for magnifying engravings, photographs, etc., usually having one large lens and two smaller ones.
Found on
http://www.encyclo.co.uk/webster/G/52

The graphoscope is an optical apparatus used for magnifying and giving fine effects to engravings, photographs etc. It was invented by Riswell and first exhibited in 1871.
Found on
http://www.probertencyclopaedia.com/browse/GG.HTM

graphoscope An apparatus containing a magnifying lens arranged for viewing engravings, photographs, etc.
Found on
http://www.wordinfo.info/words/index/info/view_unit/2724/31
No exact match found.