Wow, you learn something new every day. Now at the risk of exposing my ignorance, could someone explain HOW it's possible that a tartan might have more than one sett size? I was under the impression that sett size was determined by thread count... And if you alter the thread count, are you not then changing the name/design of the tartan itself? Or is it simply just a matter of doubling or halving the thread count to obtain the larger or smaller sett size?