They mean putting the nockset so that the bottom of the arrow's nock is 1/8" - 1/4" above square. That assumes the bow's tiller is correct. I've seen quite a few bows where they paper tune and the nock winds up below square. When that happens, or when the nockset has to be way too high to get good flight, the tiller needs adjustment.

Edited by - Arthur P on 01/23/2003 17:31:33