#chronoscope  an instrument for accurate measurements of small intervals of time
  supertype:  measuring_instrument__measuringinstrument__measuring_system__measuringsystem__measuring_device__measuringdevice  instrument that shows the extent or amount or quantity or degree of something
  subtype:  time-delay_measuring_instrument__time-delay_measuring_system  chronoscope for measuring the time difference between two events

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