- Definition: A chronometer is a highly accurate timekeeping instrument, traditionally a mechanical watch or clock. It is especially used in marine navigation where precise timekeeping is crucial for determining longitude by celestial navigation methods. Chronometers are designed to maintain accuracy despite motion or varying environmental conditions.
- Etymology and Origin: “Chronometer” comes from the Greek words “chronos,” meaning “time,” and “metron,” meaning “measure.” The term was first used in the late 18th century, around the time when advances in timekeeping technology made the accurate measurement of time over long sea voyages possible, significantly aiding in navigation.
Chronometer: Precision in Timekeeping – Definition and Historical Development
