Text-book of general physics, for the use of colleges and scientific schools (1899)
Hastings, Charles Sheldon · Boston: Ginn & company · leaf 18
not equal that of thependulum clock at its best: but, on the other hand, the chro-nometer is capable of giving reliable results where, as at sea,the clock would be perfectly useless. A watch does not differ essentially from the chronometer,except that it is smaller, and the mechanism of the… … Fig. L a cylinder carrying a sheet of paper and revolved uniformlyby clock-work once a minute. Supported above the paper,and resting upon it so as to leave a helical trace as thecylinder turns, is a pen electrically connected with a clock,and so arranged that each time the clock beats it receives…
Physics
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