- Accurate clock - Timepiece - An instrument for measuring time; a timekeeper. - A portable timekeeper, with a heavy compensation
balance, and usually beating half seconds; -- intended to keep time
with great accuracy for use an astronomical observations, in
determining longitude, etc. - A metronome.
- An instrument for obtaining an accurate record
of the time at which any observed phenomenon occurs, or of its
duration. It has an electro-magnetic register connected with a clock.
See Chronograph.