Pattern is reversible. This scarf can be knit in almost any type of yarn, and gauge is not crucial. Adjust width of scarf by casting on more or less stitches in multiples of 12. Make sure to use a needle size appropriate for the type of yarn you use.

Scarf matches the Pythagorean Hat:
http://www.ravelry.com/patterns/library/pythagorean-hat

Stitch patterns used in this pattern are mentioned in the Pattern Post here:
http://smariek.blogspot.com/2007/10/pythagorean-hat-scarf.html
and also in the Pattern Bibliography post here:
http://smariek.blogspot.com/2007/11/pattern-bibliography.html
.