As one who has an interest in skylight sundials, I complain that this is NOT one!
For me, a "skylight sundial" must have the dial face ON THE SKYLIGHT. However, what this shows is the marvelous opportunities for providing "interior sundials" on an opaque surface rather than on windows. There are many such walls in daylighting shafts and sun rooms. Dave Bell has shown that the angle of the banner gnomon could be right for Phoenix. At least its top edge could be adjusted to be so. John has pointed out that something is wrong with the 12 mark. Unless the wall is reclining I would expect a vertical down from the banner parallel to the bricks. That should put the middle of the 12 and the noon mark more towards the center of the brick. More like the "1" of the numeral "12". Then there is the spacing of the hour marks . . . Nice discovery! Claude Hartman see my skylight sundial, dial 18 : http://www.advanceassociates.com/Sundials/Stained_Glass/sundials_EGP.html although outdoors above a patio, the dial face is on the shade cloth "skylight" I have since moved from that location but a recent visit showed the current owners maintain this "Tove's Nest". --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
