THESAURUS

Optigraph Thesaurus

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 an attached pencil.

Related Words

Related dictionary entries include equatorial, ortho, oroheliograph, altazimuth, perspectograph, dipsector.

Continue With Optigraph

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