Originally Posted by SummerBreeze
Thank you so much for explaining this for me!!!!!!
I don't know much about vintage patterns or even gages. I think I have one or two of balls of sz 20 and sz 30. I'll around for the sz 50.
PS: what is the best sz hook for sz 10, 20 & 30?
As I'm sure you know, not all hooks are created equal - when in doubt, go by the size in mm.
These should help:
Thread Crochet and Snowflakes
U.S. Steel Crochet Hook Size Matched To Approximate Thread Size To Use
Heirloom Crochet -Crochet Hooks
"You may not have lost all your marbles, but there's definitely a hole in the bag." Grumpy Cat