Brass astrolabe with silver inlay 171 A.D. The data provided in the gazeteer would have been used by an educated person to calculate from each location the direction of Mecca.

- Image ID: DYEKR0
Brass astrolabe with silver inlay 171 A.D. The data provided in the gazeteer would have been used by an educated person to calculate from each location the direction of Mecca.
World History Archive / Alamy Stock Photo
Image ID: DYEKR0
Brass astrolabe with silver inlay 171 A.D. The data provided in the gazeteer would have been used by an educated person to calculate from each location the direction of Mecca.