Clocks and Watches |
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Common terms and phrases
action ALTERNATING CURRENT angle arc of vibration arranged astronomical axis balance spring balance wheel barrel arbor Board of Longitude cannon pinion causes celestial celestial equator centre wheel century chronometer clocks and watches coil compensation connected curb pins CURRENT cylinder cylinder escapement designed device driving force ELECTRIC employed engages ENGINEERING English equator escape wheel foliot balance fourth wheel friction fusee gravity arm Greenwich mean hand Harrison horology impulse dial indicated invented jewelled known lantern clock latter length lever lifting piece locking face longitude magnet master clock mechanism ment meridian middle minute wheel motion mounted move movement necessary noon obtained ordinary pallet pendulum Perren Maycock pivots plate pole position Pulsynetic rack regulator right ascension sidereal solar days stars steel strip spring sun dials swing teeth temperature third wheel timekeeping tion train of wheels verge escapement vertical weight wheel tooth wheel train winding wound