Chronograph
Pronunciation : Chron"o*graph
Part of Speech : n.
Etymology : [Gr. -graph: cf. F. chronographe.]
Definition : 1. An instrument for measuring or recording intervals of time, upon a revolving drum or strip of paper moved by clockwork. The action of the stylus or pen is controlled by electricity.
2. Same as Chronogram, 1. [R.]
3. A chronoscope.
Source : Webster's Unabridged Dictionary, 1913