Indo-Persian brass astrolabe, 1666. This brass Islamic astrolabe was made by Jamal al-Din at Lahore, Pakistan. An astrolabe is in essence a model of the universe that an astronomer could hold in their hands. This back view shows the moveable sighting arm, called the ‘alidade’, which is used to measure the position of the stars or for surveying.
Science Museum, London, Great Britain
SSPL/Science Museum / Art Resource, NY
2772 X 3504 px