chronograph
chro·no·graph
noun \ˈkrän-ə-ˌgraf, ˈkrō-nə-\Definition of CHRONOGRAPH
: an instrument for measuring and recording time intervals: as a : an instrument having a revolving drum on which a stylus makes marks b : a watch incorporating the functions of a stopwatch
—chro·no·graph·ic \ˌkrän-ə-ˈgraf-ik, ˌkrō-nə-\ adjective
—chro·nog·ra·phy \krə-ˈnäg-rə-fē\ noun
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