Need help selecting movement spacer

[Lc130]

HI All

I'm a beginner and I appreciate all the coaching I've got from members here.  Very helpful indeed. 

I just completed a service for an AS 1950/51 which I picked up as a non-runner (I gave up on it's date jumper spring from my other thread) .  Looks great on the TG.  The movement spacer is missing.  My US supplier list these replacements https://www.jewelerssupplies.com/shop-bin/sc/productsearch.cgi?search_field=movement spacer

Ranff gives us a diameter of 26MM (11.5 ligne) http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&&2uswk&AS_1951.  The case is a large diver style.

Would the 11.5 ligne assortment be the best bet?  

Thank you

Charlie

Edited December 3, 2019 by Lc130

[oldhippy]

Put the movement in the case and measure the distance between movement and case and the height. That will give you the size you need.  

[yankeedog]

case I.D. ? movement O.D. ?

[watchweasol]

Hi    sound advise from both members, follow that and you will be ok

[saswatch88]

caskerco and esslingers has assortments fairly cheap, i would get plastic this way you can make minor adjustments