At 10:25 +0000 21/12/14, Tony Marsh wrote:
>The other is why assign the name "Sun marker" for one of the
>rotating attachments to the aubrey positions?
It's a Sun marker because the way it's moved causes it to circle the
AH ring completely once every year (approx). My diagrams, for
simplicity, start with the Sun and Moon in the AH next to the axis in
the NE even though the eclipse shown happens on March 20th.