Muhammad b. Ahmad al-Mizzi lived in Damascus and worked there as a muwaqqit (time keeper) of the rabwa, and then of the Umayyad Mosque. He is the author of several works on astrolabes and quadrants. His quadrants sold for two dinars and more, his astrolabes for 10 dinars and more. In 1326/7 he constructed a quadrant which is now found in the museum of Islamic art of Cairo (No 3092).
For more detail click here.