记时计,记秒表
Chronograph \Chron"o*graph\, n. [Gr. ? time + -graph: cf. F. chronographe.] 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.
chronograph n : an accurate timer for recording time