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I've wondered about regulating a watch myself and came across this. There are other pages about as well. https://tg.ciovil.li/ Mixed success The volume control is a linux utility and shows signal strength after the preamp. It was fed into a laptop headset socket via a splitter lead. This is a stable trace off a new Seiko. A 15 year old chronometer usually doesn't give such a stable trace, it's running 15secs a day slow. It still seems to get the timing error correct despite this and playing around with position may give a more stable trace. Any new watch so far does give a stable trace. General bits bought off amazon UK. The pickup is intended for a violin. Seems to be 2 problems. Bandwidth of the electronics, too high with an amp like this and probably similar, the mechanical aspects of the pickup. Unfortunately commercial microphones for this use are rather expensive. If anyone else tries to install on Linux I found that the automated build wouldn't work but the usual ./config etc did and indicated what lib files I needed to install. John -

Hello all! When regulating and adjusting a watch we have to close the regulating pins as much as possible around the hairspring, leaving a minimal space between them and it when the balance is in the neutral position (neutral position being achieved only by taking out the anker/pallets). My question: After making all the settings on the regulator (for timing) and the end-stud (for beat error) why couldn't we close the regulating pins all the way around the hairspring? Why do we have to leave a small space on the left and right of the hairspring (if we add up these two spaces we have to get no more then the hairspring thickness or less then that). Could anyone provide more details on the phenomenon behind this thing? Maybe even a mathematical/physical explanation? Thank you! Bogdan