Middle Eastern observatories possessed an impressive array of sophisticated equipment ​ — astrolabes, quadrants, sextants, sundials, and other instruments that were used to study and track celestial bodies.
وكان بعضها ضخما ،‏ اذ اعتقد صانعوها ان كِبَر الآلات يأتي بنتائج اكثر دقة .‏