The Fathiyya Essay on Using the Mughayyab Quadrant
This treatise by Badruddin al-Maridini (died 1506 [912 AH]),
better known as Sibt al-Maridini, includes an introduction, 20 sections, and a
conclusion. The treatise discusses a range of issues in astronomy, surveying,
and mathematics. It describes the sine quadrant and parallel circles, and
explains how to measure the width of a river, the angle of a star, the depth of
a well, or the height of a mountain. Al-Maridini, whose parents were from Damascus, was born, raised, and educated in Cairo late in the Mamluk
Dynasty (1250–1517). The manuscript ...