Two rather inexactly made miniature spherical dials in stone can be mentioned. One, in the Archaeological Museum of Rhodes, the other, in Syracuse is almost complete.
References
Bellina, Giovanni: Il tempo e l' identità. Dal sentimento del tempo al tempo del sentimento, Ragusa, 2002.
Evans, James and Marée, Marcel: A Miniature Ivory Sundial with Equinox Indicator from Ptolemaic Tanis, Egypt, In: Journal for the History of Astronomy, vol. 39, 2008, 1--17.
DOI: 10.17171/1-1-3999 Title: Dialface ID 478 Creator: Berlin Sundial Collaboration Publisher: Edition Topoi Publication Year: 2014 Subtitle: Syracuse, Inv. Nr. 35080 Description: Information on the Dialface ID 478 / Object ID 439
Bellina, Giovanni: Il tempo e l' identità. Dal sentimento del tempo al tempo del sentimento, Ragusa, 2002.
Evans, James and Marée, Marcel: A Miniature Ivory Sundial with Equinox Indicator from Ptolemaic Tanis, Egypt, In: Journal for the History of Astronomy, vol. 39, 2008, 1--17.