Internet Horology Club 185
William White's crystal size conversion chart
This topic can be found at:
https://ihc185.infopop.cc/eve/forums/a/tpc/f/3426047761/m/6483924777
February 27, 2013, 23:39
Gary E. Foster
William White's crystal size conversion chart
This may already be posted, but I couldn't find it.
Courtesy of IHC Life Member William White.
http://www.whitescrystals.com/conversion.html