A didactic poem in 144 octaves, The Sphere was composed by Leonardo di Stagio Dati, a Dominican friar of Santa Maria Novella. It belongs to the tradition of medieval cosmographic poems. The image shows the four elements up to the heaven of the Moon.
Tomba-Koelliker plane astrolabe
Canonical hours clock
Dante historiato - The Earthly Paradise: the chariot drawn by the gryphon. Appearance of Beatrice