| 摘要 |
The collet, which can be made in one piece at the same time as the spring, is formed by a plate (1) which comprises an opening (3) for mounting on a balance staff (5) and has an asymmetric outline (9) which follows at an approximately constant distance d with the outline of the first turn (11) of the curve. The plate may also have recesses (13) enabling the centre of gravity g to be repositioned on the balance staff (5). |
