Astronomik saat

Astronomik saat, Güneş, Ay, Zodyak takımyıldızı ve bazen büyük gezegenlerin göreli konumları gibi astronomik bilgileri görüntülemek için özel mekanizma ve kadranlara sahip bir saattir.

Kaynakça 
 Joseph, Needham. (1986). Science and Civilization in China: Volume 4, Physics and Physical Technology, Part 2, Mechanical Engineering. Taipei: Caves Books Ltd.
 John North. (2005). God's Clockmaker, Richard of Wallingford and the invention of time. Hambledon and London.
 Tor Sørnes. (2008). The Clockmaker Rasmus Sørnes. Borgarsyssel Museum, Sarpsborg, 2003 Norwegian edition, and 2008 English edition (available from the museum).
 King, Henry. (1978). Geared to the Stars: the evolution of planetariums, orreries, and astronomical clocks, University of Toronto Press.

Dış bağlantılar 

 The search for Rasmus Sørnes 4th clock 
 
 Prague Astronomical Clock
 The Annosphere, a contemporary astronomical clock

 
Arap icatları