LEONARDO DA VINCI (VINCI 1452-AMBOISE 1519)
Designs for a water-clock
c.1508RCIN 912716
A drawing of a bell-ringer device consisting of a man striking at the bell with a hammer, the bell being raised on a stake. The device is operated by a water mechanism with twenty four containers of different sizes, corresponding to different hours of the day. To the right are three diagrams and notes.