Study of a twenty-four hour/astrological clock showing the interior movement and the exterior face

SOURCE: Daniele Barbaro. I Dieci libri dell' architettura di M. Vitruvio / tradutti et commentati da Monsignor Barbaro (Venice, 1556), p. 255 NOTES: This 1556 edition of Daniele Barbaro's translation and commentary on Vitruvius's treatise entitled 'De Architectura' (Ten Books on Architecture) was prepared with the assistance of Andrea Palladio. The woodcut illustrations have been attributed to Andrea Palladio, Giuseppe Salviati and Giovanni Rusconi. Vitruvius's original treatise was written during the first century BC.