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mainspring for Slava stopwatch

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matabog Super WRT Addict

matabog

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Hello!

I measured the old spring in the Slava stopwatch that I opened here: 

The numbers are: 480-520mm/2.74mm/0.39mm, give or take a couple of microns :)

I couldn't find this combination on Cousins. Does anyone know where I could find one?

The ends are like this:

IMG_3695.JPGIMG_3696.JPG

Thank you,

Bogdan

 

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JohnR725 Distinguished Member

JohnR725

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I was looking at the sources I have as it look like an American pocket watch spring at least for the end. I can find some that are close at 2.7 mm and the length is about right but the thickness is a definite problem. The thickest spring I'm finding is .21 mm

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