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A clock (from the Latin cloca, "bell") is an instrument for measuring time and for measuring time intervals of less than a day—as opposed to a calendar. Those used for technical purposes, of very high accuracy, are usually called chronometers. A portable clock is called a watch. The clock in its most common modern form (in use since at least the 14th century) displays the hours, minutes and, sometimes, seconds that pass during a twelve- or twenty-four-hour period.
History
The clock is one of the oldest human inventions, requiring a physical process that will proceed at a known rate and a way to gauge how long that process has run. As the seasons and the phases of the moon can be used to measure the passage of longer periods of time, shorter processes had to be used to measure off hours and minutes. The sundial, which measures the time of day by the direction of shadows cast by the sun, was widely known in ancient times.
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Black Barn Clocks - Fine longcase and wall clocks made using traditional techniques.
PGM Clocks - Specializing in custom made solid oak clocks in traditional styles including longcase and wall. Includes photos and prices. [Best viewed in IE, does not work in all browsers.]
Meta Description: [ hand made solid oak clocks custom made to individual order. bracket clocks, Vienna regulators, wall clocks, grandfather clocks, longcases, granddaughter clocks, barometers ]
| Seymour in 1525, the clock in the tower of St Augustine's Church at East Hendred, Oxfordshire, is one of the oldest ... | |
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