autochronograph

== English == === Etymology === From auto- +‎ chronograph. === Noun === autochronograph (plural autochronographs) (rare, archaic) An instrument for the instantaneous self-recording or printing of time. === References === Edward H[enry] Knight (1877), “Autochronograph”, in Knight’s American Mechanical Dictionary. […], volumes I (A–GAS), New York, N.Y.: Hurd and Houghton […], →OCLC. “autochronograph”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.