The Collaborative International Dictionary of English v.0.48:

Cymograph \Cy"mo*graph\, n. [Cyma + -graph.]
   (a) An instrument for making tracings of the outline or
       contour of profiles, moldings, etc.
   (b) Var. of Kymograph. -- Cy`mo*graph"ic, a.
       [Webster 1913 Suppl.]