HANK HELP!

[KnoviceKnitter]

Hello-How much yarn is in a HANK of yarn?? I received a big box of yarn from my sister( from her very own sheep!). She sent the wool out to be processed and the 2 ply yarn came back tied up nice and neat in hanks. Is there a standard length to a hank? Do I go by weight? Some of the yarn I dyed--came out beautiful. I have been working on only small projects since I'm still new at this knitting thing and afraid to waste this wonderful stuff plus I am unsure how much yarn I really have...Thanks for your help--this site is great! KnoviceKnitter