Small folio (205 x 282 mm). Turkish manuscript on paper. 113 pp., per extensum, with half-page illustrated headpiece and numerous tables. Black and occasional red ink on paper, text ruled in red and green ink throughout. Contemporary black half calf over cloth boards. Decorated paper pastedowns.
A "brief account of knowledge of some constants" by Hussein bin Ibrahim Al-Kitbi Al-Falak, written in accurate penmanship and containing numerous astronomical tables in black and red ink.
Paper a little browned and brownstained. Bookplate on front flyleaf with printed portrait, dated 1342.