Optigraph
Pronunciation : Op"ti*graph
Part of Speech : n.
Etymology : [Optic + -graph: cf. F. opticographe. See Optic, a. ]
Definition : Defn: 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.
Source : Webster's Unabridged Dictionary, 1913