FORMELLO AND HIS MERIDIAN SUNDIAL, illustration in M. Catamo LA MERIDIANA DI FORMELLO
While in Italy there are about 13.000 sundials of many kinds (mostly on walls), sundials such as the one in Formello are relatively rare. In Lazio we just have two: one in Santa Maria degli Angeli, in Rome, and now the recently restored one in Formello’s San Lorenzo Martire’s Church.
An historical and scientific essai.
(Many thanks to Prof. Woodruff T. Sullivan III, for his kind suggestion and his precious attention)