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“chronometers”
1. In horlology, an exceptionally precise watch, timepiece, or clock: The time of day is indicated by a chronometer set to Greenwich Mean Time.
2. An instrument for measuring time, specifically applied to time-keepers adjusted to keep accurate time in all variations of temperature: Chronometers are said to differ from watches by having a more perfect escapement and a compensation balance, and are used for determining longitude at sea, and for other exact observations.
2. An instrument for measuring time, specifically applied to time-keepers adjusted to keep accurate time in all variations of temperature: Chronometers are said to differ from watches by having a more perfect escapement and a compensation balance, and are used for determining longitude at sea, and for other exact observations.
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chrono-, chron-
(page 4)
meter-, metro-, metr-, -metrical, -metrically, -metron, -metric, -metrist, -meter, -meters, -metry, -metre
(page 9)
Word Entries at Get Words:
“chronometers”
An instrument for measuring time precisely, originally used at sea: The chronometer is designed to remain accurate through all conditions of temperature and pressure.
The first accurate marine chronometer, capable of an accuracy of half a minute a year, was made in 1761 by the English horologist and instrument maker John Harrison.
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Measurements and Mathematics Terms
(page 4)