Breguet hairsping

[Murks]

hi everyone what if buyed Breguet hairspring does your regulator have to be breguat regulater?

[grsnovi]

Usually you would source a hairspring based on the watch's balance which should have an integral regulator built into the balance cock. If the watch initially had a hairspring with a Breguet over coil, you would want the replacement spring to be the same.

This earlier thread from 2018 discusses obtaining a hairspring: 

https://www.watchrepairtalk.com/topic/8039-obtaining-a-hairspring/

Here are several videos that you might find of interest:

1. Changing a damaged hairspring
2. Repairing a twisted hairspring
3. Repairing a bent hairspring

@Murks have you taken any of Mark's online courses? I think you would benefit from taking his course #2 as well as the next one (#3). I thought #3 was of the most benefit to me.

Edited September 5, 2022 by grsnovi
Added helpful links