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Mechanical Clocks to Chronometers
Micro and Macro Mechanism
Electric Clocks Chronographsand Beyond
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accuracy accurate American clock astronomical balance spring balance wheel Banjo clock became began bell bi-metallic strips brass Breguet Britain calendar called chronograph chronometer clepsydra clockmakers clocks and watches craftsmen crown wheel Ctesibius cylinder escapement dial discs domestic clock early Egyptian eighteenth century electronic elinvar England English clock English clockmaker escape wheel foliot France free pendulum French fusee German Greenwich guild Harrison Hattori horology impulse inches instrument International Date Line invented Japan Japanese lantern clock later lever escapement London long case clock longitude makers master clock measuring mechanical clock ment meridian metal method minute hand movement oscillating pallets popular produced public clocks quartz clock record Science Museum Seiko Seiko-Hattori seventeenth century shape shelf clock solar striking style sundial swing Swiss tall clocks teeth temperature Thomas Tompion timekeeping tion type of clock verge escapement Watch Company watches and clocks watchmakers weight