American horological journal, devoted to practical horology (1869)
Miller, George B · New York, G. B. Miller · leaf 161
t volume, we would suggest that itwould be acceptable as soon as the state oftheir finances will admit of it.] 152 AMEKICAN HOKOLOGICAL JOUKNAL. ADJUSTMENTS TO POSITIONS, ISOCHKONISMAND COMPENSATION. NUMBER THEEE. We will now examine under what circum-stances and conditions we can look upon the… … the law P Po curve which commences the hair-spring ; Abeing the end fastened, C the point of con-junction of the curve and the circle of thefirst coil, meeting it at a tangent. At theother extremity the hair-spring terminatesby an equal and symmetrical curve, theend of which, A, corresponds to A,…
Clocks and watches
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