Zodiac concrete slab

Do you think this item is genuine? I can't make out any hour lines, although there seem to be some kind of anchor points for a rod. Watch from min. 11:09 onwards. https://youtu.be/-o-70BqIxIs Dan Uza ---

Catalogue of sundials in Stuttgart museum

Dear colleagues, The Wuerttemberg State Museum at Stuttgart holds a rather rich collection of instruments, among them many portable sundials. A scientific catalogue of the sundial collection, compiled by Juergen Hamel and Irmgard Muesch, has appeared today as vol. 63 of "Acta Historica