Artificial intelligent assistant

rhythmometer

rhythˈmometer
  [f. Gr. ῥυθµός rhythmus: see -meter.]
  A kind of metronome.

1812 Gentl. Mag. LXXXII. ii. 588 An instrument in the form of a small clock..for the purpose of marking the time to musical movements... It may perhaps most properly be called a Rhythmometer. 1886 Hall & Jastrow in Mind XI. 57 The simple apparatus for producing the clicks which we call a rhythmometer.

Oxford English Dictionary

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