| 摘要 |
<p>Watch has a moon phase indicator (8), a needle (30) controlled by a mechanism comprising a moon phase wheel (17) held in position by a ratchet (19) and driven in a stepwise manner by means of a pin or a finger (14) integral with a drive wheel (13) that makes one turn every 24 hours and that is in turn driven directly or indirectly by the hour wheel. The indicator is driven by an alternating kinematic chain formed by a balance lever (20) with two arms (22, 24), a spring (23) and cam (18) linked to the moon phase wheel.</p> |
