You searched for: “arcographs”
arcograph (s) (noun), arcographs (pl)
1. An instrument for drawing a circular arc without the use of a central point; a cyclograph.
2. In geometry: An instrument for drawing arcs, having a flexible arc-shaped part adjusted by an extensible straight bar connecting its sides.
This entry is located in the following units: arc, arc-, arci-, arch, arch- (page 2) grapho-, graph-, -graph, -graphy, -grapher, -graphia (page 6)