Caption:
Astrolabe of Ibn Said al-Sahli. This instrument also made it possible to calculate the geographical direction of Mecca. It was made in Toledo in June 1067 by the astrolabist Ibrahim ibn Sa' id al-Shali. All the inscriptions were written in kufic script. Brass. Diameter: 24.20 cm, thickness: 5 cm and maximum height: 33.50 cm. National Archaeological Museum. Madrid. Spain.