Reply To: timing machine

[gerene]

Thank you David for your extensive reply.

I understand that having the beat as close as possible to one line is the ultimate goal. However, getting it there is not always easy. It is not difficult with regulators having a movable stud, but more so when the hairspring collet has to be turned. In the first case the balance stays assembled and the watch ticking on the timegrapher. One can then move the stud untill the lines come together. When the collet has to be moved, one has to make a mental note of the direction and amount of correction to apply, disassemble the balance and move the collet, with the risk of damaging the hairspring in the process.
Therefore I was wondering what would be an acceptable beat error. For instance if it is 2 ms or less it is better left alone.
What are your thoughts about that?

Jan