Step 1: Materials
Size 8 (US) circular needles
Size 8 (US) double-pointed needles
Three stitch markers
The gauge is 1.5 sts for 1 cm, or 15 sts for 10 cm.

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http://www.psychoastronomy.org/pinsandneedles/
Tracy
http://scifikal.blogspot.com/2007/04/space-invaders-earflap-hat.html