There are two other important Internet sources for information on Sundials. The first is Sundials on the Internet. Links to pages on SotI are included in the list below, and are suffixed with [SotI].
Second is The Sundial Mailing List maintained by Daniel Roth. The Internet dialing community is indebted to Daniel for the mailing list, as well as his list of links from which those below were originally derived.
Here is a link to the AltaVista translation utility which may help you with pages that are not in your native language.

