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The part you've linked above is the 242 canon pinion. the 227 3.55 high is on Cousins as you've shown but isn't listed when you do a parts search for the 2892.A2 If you're measuring 3.6 then I think this would be the correct one as your original post. -
It's this one, though weirdly the part code on the link ends 'h315' rather than the 'h355' it actually says on the site, tying in with the height of 3.55mm https://www.cousinsuk.com/product/eta-2892a2?code=ETA2892A2242H315# https://www.cousinsuk.com/product/eta-2892a2?code=ETA2892A2242H315# I note that dimension 'C' is given as pivot end to pivot end. -
By Neverenoughwatches · Posted
The rolex...the rivets made to brake away easily, probably what you saw happening with the Horia tool. It's not just about bending the balance wheel arms , which seems to be what these accessories prevent. Potential staff hole deformation....over one or many staff changes. Then we have Chronoglide popping out staffs with a staking set and proudly showing a wobbly wheel. ?? Removing the staff is just one part of the process of replacement. Staking on a new one is just as easy if not more so to mess up. -
I was in London recently and took the chance to visit the Clockmakers Museum which is now hosted at the Science Museum. It’s free and well worth a visit if you are in that neck of the woods. One of the exhibits was this screw made by Waltham. The blurb says you can fit 47,000 of them in a thimble 😵💫 I assume it was used in a watch and they didn’t just make it because they could. It made me wonder though, how on earth anyone could work on something that small. You can “see” it in the centre of the box in the picture; although you can’t really tell what it is. For all I know they cut a grain of sand in a half and put that in the box! -
By Embezelled · Posted
Hi all, I'm about to take my first steps into watch repair as a hobby, and looking into buying a basic and inexpensive stereo optical microscope from AliExpress. My main purpose is simply something I can use in addition to eye and head loupes, or in place of them, during disassembly and reassembly work. So I assume that means something that has only modest magnification at the low end or uses a Barlow lens to bring it down. And perhaps with a tiltable head. I really don't have an interest in combining it with camera work, I simply want it for viewing the movement at appropriate magnifications as I check things or use tools on the movement. Without asking for specific model recommendations, can anyone point me to the kind of model shown on the Ali website that might suit my purpose? I've been reading two of the threads about microscopes, very informative, but it's a lot to digest for the uninitiated.
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