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Locating replacement second hands

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Chief

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Hi all, I'm back to repairing my citizen project after a short break, I ended up replacing the full movement as it had multiple issues. Anyway I fit the hands and noticed it losing seconds in certain positions, then I noticed if I shake the watch the second hand comes off the pinion! After attempting to tighten the shaft on the second hand, I inevitably broke the hand. I'm still a bit rough for watch repairs.. anyway I've contacted CousinsUK regarding a replacement second hand and they were unable to source it, apparently it's discontinued. Im now thinking I may need to just find a suitable replacement, but what I want to know is the correct diameter of the second hand that's needed. I still have the old fourth wheel and pinion from the original movement which I can measure, but how accurate do I have to be?! I have a decent set of Vernier calipers and micrometers so measuring isn't an issue. I just want to know whether to round up, round down or go with the exact number shown.

 

Sorry for the long post and thank you for any help you can offer!

PXL_20240525_123654416.jpg

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On 8/1/2024 at 7:33 PM, AndyGSi said:

What's the movement details?

Sorry for the late reply, I had notifications turned off! It's a citizen C720 movement.

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