In the meanwhile there are at least 6 equatorial dials known from antiquity, some were made for temporal hours, some for equinoctial hours, some were done with a polar, some with a horizontal gnomon, all happened in the 4th or the 3rd cent. BC. You may have a look at the not yet completed digital archive of Greco-Roman sundials http://repository.edition-topoi.org/projektinfo.php?project=BSDP Karlheinz (hope my posting works now with the new email address)
--------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
