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The Removal of the Veil in the Description of the Quadrants
This manuscript in 12 folios is a mid-18th-century copy of Kašf al-Qinā‘ fī rasm al-arbā‘ (The removal of the veil in the description of the quadrants), a treatise devoted to the description of the astronomical instrument known as the quadrant. The treatise originally was compiled by Muḥammad ibn Muḥammad Ibn al-Aṭṭar in the first half of the 15th century on the basis of the teachings of his predecessors, al-Mājidī and Nūr al-Dīn al-Naqāš. The treatise is a precious source for understanding the degree of refinement reached by astronomical instrument making ...
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