Timex T2N740 stem and crown
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By Neverenoughwatches · Posted
You can press the collet on by hand with the correct sized tube. it's not so difficult if you are careful, there are also other simple devices to do the job, I've never actually used a staking set to do it. You might find correcting a twist easier this way.....normally you would anchor the hairspring with one pair of tweezers ( anchoring pair )but If the twist is very close to the stud that may not be required as the stud forms the anchoring point. With second pair of tweezers (correcting pair) hold them slightly open over the twist then set them at the angle you feel is right for the correction then close them together and release slowly. This way there is no wrist movement involved in the manoeuvre only finger pressure. Try it on some scrap springs and see how it works for you, i feel that I have much more control over the operation. -
Yes, they're the ones, although I didn't pay that much for them: I got them for AU$36.71 from Chinese seller makeupgogo.
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By Neverenoughwatches · Posted
https://www.ebay.co.uk/itm/204999522995?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=zN0IOQBiQhm&sssrc=4429486&ssuid=tBiLZaCfRb2&var=&widget_ver=artemis&media=COPY -
By Neverenoughwatches · Posted
In the same way that increasing a hairspring's active length increases the time it takes to oscillate so decreasing the rate . -
For those interested in learning more about dynamic poising and the adjustment of a precision watch, the best book I know of that’s available in English is “Watch Adjustment” by Hans Jendritzki. The best introduction to dynamic poising, which references Jendritzki’s work, that I’m aware of online is the PDF written by Dewey Clark, here. The importance of the point made above that dynamic poising should only be attempted on a watch that has been properly serviced and free of any mechanical defects cannot be overstated. Best Regards, Mark
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