Los poliédricos relojes de sol del Museo Galileo en Florencia.
The Canterbury Astrolabe Quadrant: Unique medieval astrolabe saved by the British Museum
An early 18th century brass Altazimuth theodolite, signed T. Heath Fecit. The silver compass dial is finely engraved with pointers to the North, South, East and West. The inner circle is divided in four quadrants, the outer 0º-360º.
Copernicus, Over de omwenteling van de hemelse sferen (1543)
Italian Armillary Sphere, c. 1800. A central small earth ball, one brass arm for the sun, rings with hand painted scales, ecliptic with houses of zodiac named and with their symbols, signed on the polar circle "Luigi Cervellati", paper horizon ring, supported on four turned wooden legs united with cross-stretchers.
Astrolabe with geared calendar, ca.1221/22. This 13th-century Persian astrolabe is the oldest complete device with cog wheels known. On the front side it is an astrolabe, linked to the calendar by a gear train. On the back, the disc shows the phases of the Moon | Oxford, Museum of the History of Science
Ferguson’s Orrery - made entirely in the U.S.A. by American craftsmen. Astronomical device - Move the lever to the correct date and find the correct position of the earth on its axis, in relation to the sun and moon.