Stefano Buonsignori (?-1589)
Sundials, 16th century
Florence, Istituto e Museo di Storia della Scienza, inv. 2458 and 2459

Sundials with hexagonal and square faces. A different type of sundial (horizontal, vertical or inclined), complete with gnomon, is marked out on each face. The compass served to orient the instrument towards the local magnetic meridian.