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From what I’ve seen Rich below 0.1mm aren’t available unless maybe from a Swiss manufacturer I don’t know and I can easily imagine the price for 1 to be more than that whole Aliexpress set 😂🤪 my next thought is that the really small sizes would be more likely found in ladies movements which we do less often? Maybe one of the professional guys we are so lucky to have here can help educate us? Tom
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Hello again, I meant to say the movement above was in a Chronosport Atlantis 20 ATM on eBay and wondered if you had the same movement in your watch, all the other Chronosport watches had auto-matic movements....
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By Neverenoughwatches · Posted
Also been looking at the same ones as Tom 0.1.- 1mm around 55 quid inc shipping. The pivot straightner i have runs from 0.07 - 0.15 in increments of 25 microns. I guess you could use a balance staff of sizes under 0.1 to make up the remainder of the lower sizes. -
By Neverenoughwatches · Posted
I have always had it in my mind that hairsprings can fatigue in just the same way as mainsprings can. If a hairspring has gone through a rough process of repair then its structure will have changed ( bending any metal backwards and forwards will cause micro fractures and eventually breakage ) in those areas of heavy manipulation. Its strength and elasticity is no longer linear over its full length so no longer isochronical.
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