What time is it? Watches and horology

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Howard in reply to @edscoble

You’re probably right the Sinn shouldn’t have a bubble.

It's either got to have an air bubble or a volume compensator of some sort. Water expands as temperature increases and it's not compressible so it will just bust its way out of the watch without some kind of volume compensator.

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DethBeard in reply to @Howard

is it water?
I thought they used oil?

(again, I might just be thinking of u-Boat, and modded g shocks)

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Howard in reply to @DethBeard

Huh yeah. Not sure why I assumed it was water. It probably isn't though is it?! Oil is more stable with temperature, depending on what's added to it, but it would still be difficult to 'fill' it without some slack.

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