From the Medici Court
Egnatio Danti, the maker of this astrolabe, was an astronomer and cartographer in the service of Cosimo I de' Medici, Grand Duke of Tuscany, and the single projection is for the latitude of Florence. It is one of the finest Italian astrolabes to have survived from the Renaissance.
Astrolabe, by Egnatio Danti, Florence, c.1580 (Inv. 52209)