UG 1205 / 65 mainspring

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toastmh

·Mar 31, 2025

I am trying to find a mainspring for my UG 1205 based Railrouter. It seems that this movement also shares parts with earlier calibers 64 and 65 but I cannot be sure. Info on these movements is scarce! Any advice would be greatly appreciated regarding compatibility of parts and base movements related to the 1205.

 

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Larry S

·Apr 1, 2025·Color Commentator for the Hyperbole.

T toastmh

I am trying to find a mainspring for my UG 1205 based Railrouter. It seems that this movement also shares parts with earlier calibers 64 and 65 but I cannot be sure. Info on these movements is scarce! Any advice would be greatly appreciated regarding compatibility of parts and base movements related to the 1205.

I have never needed to source a mainspring for any of the dozens of watches I’ve had repaired. Your watchmaker has the resources to obtain a compatible mainspring. If he is asking you to do this, go pick up the watch and find another service provider.

 

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toastmh

·Apr 1, 2025

Hey Larry, I am my watchmaker.

 

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Carlton-Browne

·Apr 1, 2025

Some info here

https://omegaforums.net/threads/universal-geneve-fs-the-other”-railway-watch.55668/post-2441180

but especially here thanks to perseo66

https://omegaforums.net/threads/universal-geneve-fs-the-other”-railway-watch.55668/post-2451695

 

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toastmh

·Apr 1, 2025

Thank you kindly!

 

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Larry S

·Apr 1, 2025·Color Commentator for the Hyperbole.

T toastmh

Hey Larry, I am my watchmaker.

Far as I know there are sources for mainsprings. Don’t have to be UG parts which are dear.

 

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toastmh

·Apr 1, 2025

Yes for sure, I am just trying to determine the mainspring I need without having to remove the old one and measure it.

 

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rustynuts

·Apr 8, 2025

Cal 1200 parts should work.
https://www.cousinsuk.com/PDF/categories/1645_Universal 1200, 1205.pdf