Jump to content

Watch case


Recommended Posts

The first thing you need to know when looking for a case, is what size the movement is.

Assuming this to be an ETA 2892 (which is by best guess based on your question) then in that paqrticular case the movemenet size is 11.5''' or 11.5 ligne

Next you need to know where the crown and pushers are. http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&&2uswk&ETA_2891_9

The best source for this information, in this case would probably be ETA themselves.

https://www.eta.ch/en/our-products/mechanical-movements

2892-A2 technical PDF is here.

https://shopb2b.eta.ch/technical_documents/index/pdf/id/1621/

image.thumb.png.0a2ece0be4b7f3b2cf5da9a3ac81d745.png

Now armed with that information, you can start trawling through the various sites that sell cases, however where you have a movement that has more than a simple single crown, you may need to get creative, and machine an existing case, a movement retaining ring or spacer (which you may be able to 3d print from plastic) or even machine the entire case from scratch.

Then of course you will need a dial and hands.....

Edited by AndyHull
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.



  • Recently Browsing

    • No registered users viewing this page.
  • Topics

  • Posts

    • Hello, I am about 5 months into watchmaking and I love it!   The attention to precise detail is what really attracts me to it. (and the tools!) I am working on a 16 jewel 43mm pocket watch movement.   There are no markings besides a serial number (122248) .  The balance staff needs replacement. The roller side pivot broke off.  I successfully removed the hairspring using Bergeon 5430's.  I successfully removed the roller using Bergeon 2810.   Did i mention I love the tools?! I removed the staff from the balance wheel using a vintage K&D staff removal tool  with my Bergeon 15285 (that's the one that comes with a micrometer adjustment so it can be used as a jewel press as well as a traditional staking tool...it's sooooo cool...sorry..  can you tell i love the tools?) No more digressing..  I measured the damaged staff in all the relevant areas but I have to estimate on some because one of the pivots is missing. A = Full length  A= 4.80mm  (that's without the one pivot...if you assume that the missing pivot is the same length as the other pivot (I'm sure it's not)  then A = 5.12 mm...(can I assume 5.00mm here?) F=  Hair spring collet seat  F=  .89mm   (safe to assume .90 here? .. I am sure that my measurement's would at least contain  .01 mm error ?) G = balance wheel seat  G = 1.23 mm  (1.20mm?) H  =  roller staff  H =  .59mm  (.60 mm?) B  = bottom of the wheel to roller pivot   B  = 2.97mm  (3.00 mm?)     here I am estimating  again because this pivot is missing. So my friends, and I thank you profusely,  can you point me in the right direction as to how to proceed? Do i buy individual staffs?  or an assortment?   Since I don't know exactly the name of the manufacturer, will that be a fatal hindrance?   Tbh, I'm not even sure what country of origin this movement is. Thank you!    
    • Thats why i asked that question earlier, what happens if lubrication is placed directly on top of epilame ?  As opposed to walled within its non epilamed area . I'm not saying its right, i have no idea , just asking questions. 
    • thinking of where epilam should be removed did you know there was a patent that covers this? At least for the escapement I'm attaching it. GB1057607A-1 epilame.pdf
    • Back home...printing now.  Will report results
    • Oh well, if Master @nickelsilver says it's the way to go, then it is the way to go! I stand corrected! 🫡 Are there any other places where you're supposed to remove the epilame from the contact point of rubbing? I don't think so! Thanks for the effort @Neverenoughwatches, much appreciated! 🙂👍
×
×
  • Create New...