Search:optigraph -> OPTIGRAPH
optigraph
o p t i g r a p h hex:#111;#112;#116;#105;#103;#114;#97;#112;#104;
The Salt of the World?
- Optigraph - 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.