Glossary online?

 The chapter ring is the circle on a watch or clock face that within lie the hour numerals.  I have not seen a real concisive glossary of watch terms online.  

http://www.nawcc-index.net/Lexica.php

from here it looks to have about everything you could ask for...

when googleing watch and clock stuff for hard data remember the science of timekeeping is called Horology and you will find much more

 And in 3 languages, too!

Then a chapter ring is just the ring of numerals, 1 to 12 or 12, 3, 6, 9, and those dots or arrows. Interesting... must be some ancient history that connects the word 'chapter' to that ring thing. Now if only I could find a tool to open a watch case that costs less than the watch! I suppose it only makes sense if one is interested in servicing a very expensive watch or several watches. Otherwise, I take it to a shop and pay for his expertise.

I do my best Geezer lol