Patent ID: 11921468
Assignee: NIVAROX-FAR S.A.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 10:
11. The method according to claim 10, wherein said main tool is chosen to have a plurality of first flat portions or first recesses arranged on the lower shank thereof, each one symmetrical with respect to the plane passing through said tool axis and following, in the plane passing through said tool axis, a profile of said lower shank, and, in an extension of said first flat portions, the same number of second flat portions or of second recesses arranged on an upper shank thereof, each one symmetrical with respect to a plane passing through said tool axis and following, in a plane passing through said tool axis, the profile of said upper shank, and wherein, when said balance spring is placed on said upper shank and/or when said balance spring is resting on said lower shank, drive surfaces comprised in said inner surface of said collet is aligned with said first flat portions or first recesses on the one hand, and said second flat portions or second recesses on the other hand, by rotating said balance spring and/or said mock arbor.