The watch; its construction, its merits and defects, how to choose it, and how to use it (1860)
Piaget, Henry F · New York, Printed by C. Vinten for the author · leaf 24
d tapering, the principle being the strong-er and shorter the spring the quicker will be the vi-brations. T-he hair spring of watches are made flat on accountof the small space for them to work in; but wherethere is room, the isochronal spring is applied. In ma-rine chronometers for the use of… … Marine Chronometer Balance and Spherical Spring. These remarks will not be thought too detailed if weconsider that the correctness of the watch as a mea-surer of time, is mostly dependent on the correct prin-ciple of the escapement and of the hair spring. The curb or regulator, is the part used for…
Clocks and watches
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