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Please replace "a professional" by "this person". What he doesn't know or doesn't tell: often you can find a slight out-of-poise on the poising tool that is intentional. Why? Because you do not take into account the influence of the hairspring then. His luck is that he has a balance with Breguet hairspring, that is poised itself. Else his method would work more poorly. My poising tool stays in the drawer and is used for coarse adjustments only - I use dynamic poising. No more dangerous removing and mounting of the hairspring. Additional I use PCTM instead of pen and paper: it tells automatically magnitude and exact location of the heavy point. And I do not have to remember all the rules of dynamic poising then. Frank
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Someone else may have a better idea but it looks more like a dial indicator than a micrometer. Would be useful for lathe work. Tom
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Hi everyone. I trust you're all doing well. There's this vintage micrometer that popped up locally for sale for around $28.88/£22.81/€26.92. Anyone used this model before? If so, is it missing anything? I feel like its missing the sharp knib for the micrometer to measure? But in context of currency, a local Big Mac from McDonalds is $2.83/£2.23/€2.64 equivalent. I added pictures. Please kindly advise. Would be much appreciated, thank you!
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