The Collaborative International Dictionary
Perspectograph
Perspectograph \Per*spec"to*graph\, n. [L. perspectus (p. p. of perspicere to look through) + -graph.] An instrument for obtaining, and transferring to a picture, the points and outlines of objects, so as to represent them in their proper geometrical relations as viewed from some one point.
Wiktionary
perspectograph
n. An instrument for obtaining, and transferring to a picture, the points and outlines of objects, so as to represent them in their proper geometrical relations as viewed from a single point.