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Whereas 'tis generally esteemed that there is no practise for the finding of the longitude at sea comparable to that of those watches, which instead of a ballance-wheele are regulated by a pendulum, as now they are brought to great perfection, and made to measure time very equally; and many perhaps here as well as elsewhere being not well versed in the ordering and managing of that instrument:
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Instructions concerning the use of pendulum-watches, for finding the longitude at sea: Whereas 'tis generally esteemed that there is no practise for the finding of the longitude at sea comparable to that of those watches, which instead of a ballance-wheele are regulated by a pendulum, as now they are broug
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