Webster’s Revised Unabridged Dictionary · 1913
Ellipsograph
El·lip′so·graph (·sō·grȧf), n. [Ellipse + graph: cf. F. ellipsographe.] An instrument for describing ellipses; — called also trammel.
Webster’s Revised Unabridged Dictionary · 1913
El·lip′so·graph (·sō·grȧf), n. [Ellipse + graph: cf. F. ellipsographe.] An instrument for describing ellipses; — called also trammel.