Al-'Amal bi-al-Rub' al-Kamil [Treatise on the Perfect Quadrant].
Istanbul, [1920/21 CE =] 1339 H.
4to (172 x 212 mm). Ottoman Turkish manuscript on cream-coloured paper. 10 ff. 21 lines in black ink with occasional words in red. Contemporary marbled wrappers.
€ 600.00
Late Ottoman mathematical manuscript on the perfect quadrant, written in Constantinople. The scribe, a native of Iraq, gives his name as Mustafa bin Abd al-Wahhab bin Hassan al-Baghdadi.
Well preserved.

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