Hello Bill, your description of the shadow produced by the system gnomon-bead ( sent to the List almost one year ago ! ) coincide exactly with my conclusions
I am sorry: if I had read your message I would have let notice the coincidence , but I've not received the messages sent in the first days of May 99 for a breakdown to my modem. Now I have looked for "peculiar sharpener" in the archive for the Sundial Mail List and I have found, late, some interesting considerations Best wishes, Gianni your description,
