Internet Horology Club 185
992B Hairspring and Staff Question

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February 26, 2022, 22:39
Gary Dutton
992B Hairspring and Staff Question
Hi All
I am after some information in relation to the above.
I have just retaffed my 992B balance and was about to fit a new old stock hairspring and came across a problem.
Do the collets on the hairspring come in different sizes because the one I have don't fit as the collet is way to big for the new staff.
Any help will be greatfully accepted.