chronometers

Highly accurate clocks

Chronometers are highly precise timekeeping instruments, originally developed for maritime navigation where accurate time was essential for determining longitude at sea.

The term now applies to any watch or clock that meets strict accuracy standards set by official testing organizations.

A wristwatch certified as a chronometer has passed rigorous precision tests.

The ship's chronometer allowed the captain to calculate their exact position.

The word emphasizes accuracy rather than additional features like stopwatch functions.

precision

accuracy

Degree of correctness

timekeepingMeasuring duration's passage
calibrationAdjusting for measurement accuracy
secondsTime units, or extras

regulation · escapement · balance wheel · jeweled · certified · deviation · oscillation · tolerance · adjustment · rating

navigation

marine

Relating to the sea

nauticalOf ships and sailing
longitudeEast-west angular distance
sextantMaritime angular measurement device

celestial · Harrison · maritime · ship · voyage · Greenwich · meridian · dead reckoning · bearing · captain

horology

timepiece

Hour-measuring device

watchPortable timekeeping device
clockDevice displaying time
movementChange in position

mechanical · Swiss · craftsmanship · complication · manufacture · dial · case · winding · mainspring · Rolex

scientific

observatory

Facility for celestial study

atomicOf elemental particles
measurementDetermining size or amount
referenceDirecting attention elsewhere

standard · laboratory · experiment · data · timing · quartz · cesium · frequency · research · calibration

chronometers

accuracy

marine

timepiece

observatory

chronometers

Opposites

Phrases

Categories

Family