Hādhihi risālah tusammá tadrīb al-ʻāmil fī al-ʻamal bi-al-rubʻ al-kāmil : manuscript, [17th century?] /

On the "complete" quadrant in 25 bābs. Text almost identical to that of Mich. Isl. Ms. 742 through bāb 2, then diverges.Watermark: Anchor in circle. See Edward Heawood, Watermarks, Mainly of the 17th and 18th Centuries (Hilversum, 1950), nos. 2 and 4.Text rubricated; marginal corrections and notes in hand of copyist; copy defective, text missing from end of bāb 15 on.GAL,On the "complete" quadrant in 25 bābs. Text almost identical to that of Mich. Isl. Ms. 742 through bāb 2, then diverges.Mode of access: Internet.History of Science, Meyerhof 29733Egyptian astronomer and author of numerous works on astronomy and mathematics; muwaqqit (timekeeper) at the al-Azhar Mosque in Cairo; disciple of Shihāb al-Dīn Abū al-ʻAbbās Aḥmad ibn Rajab al-Qāhirī Ibn al-Majdī (1365-1447); grandson of Jamāl al-Dīn ʻAbd Allāh ibn Khalīl al-Qāhirī al-Māridīnī (d. 1406).Purchased in Cairo, 1933/34. Owner's mark: on p. [1], owner's autograph: ʻAbd al-Muʻṭī al-Saqqā al-Ḥanafī