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Girolamo della Volpaia, Quadrante orario
Girolamo della Volpaia, Horary quadrant

Florence 1570

Brass, iron; radius 31 cm
Florence, Istituto e Museo di Storia della Scienza, inv. 239

This quadrant carries the shadow square, the hour lines and the "Tabula Solis motus", that indicates the entrance of the Sun in the zodiac signs. The verso carries a large tilting iron foot, used as a support.