optigraph

optigraph
optigraph
(ˈɒptɪgrɑːf, -æ-)
[irreg. f. Gr. ὀπτ-ός seen + -graph.]
A contrivance for copying landscapes, consisting of a telescope placed in a vertical position so that the rays from the object are reflected from an inclined mirror through the object-glass and then from another through the eye-glass, in the focus of which is placed a movable plane glass having at its centre a small dot, which can be moved over the outline of the image.
in Webster. in Knight Dict. Mech.

Useful english dictionary. 2012.

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  • 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… …   The Collaborative International Dictionary of English

  • Verneur Edmund Pratt — was an American entrepreneur and inventor.Pratt started his career working in sales at Sears, Roebuck, and Company.In 1924 Pratt published a book entitled Selling by Mail: Principles and Practice Pratt, Verneur Edmund; Selling by Mail: Principles …   Wikipedia

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