Whoops! How do I tell WW from DK?

[cristeen]

I have a pile of yarn here waiting to be dyed for the LYS. It's been months since I worked on it, and since then stuff has been shifted a bit. I had it separated out into a pile of WW and a pile of DK. Most of it still has bands, but I have 2 skeins that have already had the bands removed and are ready for dyeing, but I have no idea what weight they are! Any easy way to tell? Or should I just stick those in my stash and move on to ones that are still banded?

[texmati]

there is a way to tell by wraps per inch. basically you wind the yarn around a ruler, and see how many times you have to wrap it to get up to an inch.

linky: http://www.woolfestival.com/articles/WPI.htm

[brooks97]

One way for me to tell usually is just by eyeing the thickness on the yarn. compare a strand of each side by side. The thicker one would be WW.