| optigraph | 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. Origin: Optic + -graph: cf. F. Opticographe. See Optic. Source: Websters Dictionary (01 Mar 1998) |
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