PAL

Ptolemaeus Arabus et Latinus

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الفلك المستقيم ‘sphaera recta’

Arabic

References: Alm. MS Leiden: f. 4r
Translation of:
Greek: ὀρθὴ σφαίρα [Alm. Heiberg: I.5, 17:12; I.16, 82:8]
Synonyms:
الكرة المستقيمة[Alm. MS Leiden: f. 13v]
الكرة المنتصبة[Alm. MS Tunis: ; 16b]