Learning how to bike

Yes, Learn how to manipulate hairspring is like we learned how to bike when we were young. And we just have to keep doing it until we are familiar with it. Just do it.

Centering hairspring.

Initial centering and flatness adjustments after pinning up. 

Centering and flatness check.

We also have a chance to know the productive machine for poising balance. 

Anyone want to make a guess what is this. :)