| 1. | The rate of a mechanical marine chronometer is sensitive to its orientation.
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| 2. | Certainly, some marine chronometers used this balance, but none have survived.
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| 3. | For navigational purposes, the hack watch is synchronized with the ship's marine chronometer.
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| 4. | Marine chronometers were as revolutionary in the 19th century as GPS is today.
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| 5. | Both marine chronometers to determine longitude by means of celestial navigation.
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| 6. | Slightly later, John Harrison would successfully build marine chronometers from 1730.
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| 7. | Calibre 1511 : Marine Chronometer, this watch was certified at the Besan�on Institute.
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| 8. | As the son of a Swiss horologist Guillaume took an interest in marine chronometers.
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| 9. | There are currently 2 known examples of the 18K Marine Chronometer in private hands.
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| 10. | In this way ships in the bay were able to check their marine chronometers.
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