From The Collaborative International Dictionary of English v.0.48:

Optigraph \Op"ti*graph\, n. [Optic + -graph: cf. F.
   opticographe. See Optic, a. ]
   A telescope with a diagonal eyepiece, suspended vertically in
   gimbals by the object end beneath a fixed diagonal plane
   mirror. It is used for delineating landscapes, by means of a
   pencil at the eye end which leaves the delineation on paper.
   [1913 Webster]
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