Second hand size.

Not knowing anything about watch parts and what's available. I need to find out what size the I/D is of this second hand. Should be able to do it at work tomorrow. 

Reply
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You can usually size them by the movement. I buy parts like hands from Cousins, https://www.cousinsuk.com/department/watch-parts

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Movement is unbranded🙄

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You would have to measure the shaft diameter with a micrometer or caliper, no?

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The second hand is a sub dial, I've not removed the watch dial yet. Even then it is too close to the movement and does not protrude enough for a mic. Wouldn't trust a caliper, anyway I used the calibrated pins at work. A 0.28 passed through, the 0.30 didn't. In imperial that's about 0.013"