Astrolabe

From Wikimedia Commons, the free media repository

• English: The astrolabe was an astronomical instrument from antiquity with which to measure the height of celestial objects and to predict the position of stars, planets and the sun in the heavens. It was also used - in modified form - for navigation in the late fifteenth through the sixteenth century. It was superseded by the cross staff in this function.
• Latina: Astrolabium.
• Nederlands: Astrolabium.

Diagram of an astrolabe	Eighteenth-century Persian astrolabe	by Arsenius	Astrolabium with Diopter and Compass
Astrolabium with Diopter and Compass	Symbol of a marine astrolabe	Astrolabes	Astrolabe facsimile on a key chain
11th-century astrolabe from Al-Andalus	Idem	Idem: plate