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Balance Spring Stud position


TimFitz

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Just replaced balance spring on a size 18 pocket watch. I did however forget to check to see where the roller jewel was in relation to the balance spring stud on the old one.

I remember reading about this somewhere but just can't remember. Does it matter?  I have the whole movement apart while I'm cleaning it. So it would be a good time to find out.

Can someone  help ?

Thanks

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4 hours ago, TimFitz said:

Just replaced balance spring on a size 18 pocket watch. I did however forget to check to see where the roller jewel was in relation to the balance spring stud on the old one.

I remember reading about this somewhere but just can't remember. Does it matter?  I have the whole movement apart while I'm cleaning it. So it would be a good time to find out.

Can someone  help ?

Thanks

It does matter because in the wrong position it will be out of beat.

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