The gauge and needle size are dependent on the yarn you use. They will affect the final size and the amount of yarn needed but should be based on your preferences. If you want a skinny scarf, use a finer yarn and a smaller needle. If you want a wider scarf, use a heavier yarn and a larger needle or increase the number of stitches evenly on both sides. The scarf shown in the pictures was made using a size 6 needle and a heavy fingering wt. yarn.

6/26/08 - Thank you Felicity for finding the chart errors in the pattern. I have fixed them and uploaded a new version of the pattern. The only changes are in rows 37 and 39 of the chart.