The March issue of the North American Sundial Society's publication The Compendium includes the latest installment in a series of articles by Bob Kellogg on Sundials for Starters. This article covers solstice and equinox lines and deals specifically with vertical sundials. However, figures 1 and 2 of the article may lead to some confusion because the gnomons in those figures appear to be oriented as on a horizontal sundial.
In order to forestall any confusion, Bob has provided revised figures which simply rotate the gnomon through 90 degrees and make it clear that we are dealing with the gnomon on a vertical dial. We have extracted the updated article from The Compendium and have posted it for free download at http://sundials.org/compendium/bonus. We encourage everyone who receives The Compendium, whether in print or digital formats, to download this article to avoid any confusion. Fred Sawyer, editor & Bob Kellogg, author (With thanks to Tony Moss for bringing this to our attention!) --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
