Dear Friends, A correction and a suggestion.
1) In a previous post I offered: "The surface of the hand is intended to be parallel to the equator at noon and rotate about the zenith throughout the day." I meant to say "parallel to the polar axis". >From a practical standpoint this makes more sense. At my low latitude I begin to get shadows on my fingers, and in reasonably accurate positions. 2) In the woodcut the hand is shown facing toward the viewer of the woodcut. I suggest that this is for illustrative purposes and in use it should face directly at the time-seeker, and thus the sun. The correct orientation of the gnomon is still unclear, but it could be determined empirically. This is a very personal sundial, and one simply has to make it work for himself. Best, Bob Terwilliger
