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action addressed adjustment Admiralty advantage affixed Airy application arcs attached attention auxiliary power balance balance-rim bearing brass called centre changes of temperature character chronometer-makers circle circumstances claims compared compensating pieces compensation consideration considered construction correct describe difficulty Eiffe Eiffe's elastic error Excess experiments extremes of temperature figure give heat and cold important IMPROVEMENTS IN CHRONOMETERS intended introduced invention isochronal known letter Lords Commissioners losing machine manner mean mean temperature mechanical modification Molyneux months necessary object obtain patent perform pieces placed pocket chronometer portions position prepared present principle proper public trial reference Report represented reward ROBERT MOLYNEUX Royal Observatory Royal Society screws season seconds secured seen shown shows similar spring steel substance success supplementary compensating temperature trial tried usual vibrations weights
Seite 17 - Sheriff have hereunto set my Hand and Seal this Seventh day of September, in the fifth year of the Reign of our Sovereign Lord George the Third.
Seite 13 - ... it will be deprived of a great part of its polarity. It presents to the eye a spherical action, and forms one grand universal compensating power, in connexion with the arcs of the circle. It scarcely requires any definition ; the object is at once seen to the now fully informed reader and examiner.