Jan 31st 2010: Pattern updated to correct an error. Row 9 of the written instructions ended with k1, when it should have been k4. My apologies for any inconvenience this may have caused!
6 inches by 80 inches
21 sts = 6 inches in pattern
Keep in mind that because this is a scarf, gauge need not be exact. If you are using much thinner yarn, go up several needle sizes from the suggested needle size on the ball band, and you can always double the lace pattern for a wider scarf.