A commentary on Ptolemy’s Liber de Analemmate (A.5.1) published by Federico Commandino in Rome in 1562. The commentary is interspersed with Ptolemy’s original text, here given in a version revised by Commandino. MS Urbino, BU, Fondo del Comune – Busta 120 (28) contains the draft or the preparatory work for the edition.

Text ‘(ed. Rome 1562) Claudii Ptholemei liber de Analemmate cum commentariis Federici Commandini Urbinatis. [text] Consideranti mihi, Syre, ex angulis, qui circa gnomonis locum accipiuntur, qui rationali consentanei essent… (1v) [comm.] Commentarius. Antiquos mathematicos de gnomonicis rationibus conscripsisse ex Vitruvio, Ptolemaeoque satis constat — ab ipso Analemmate exordium capientes’ (followed by diagram).

Bibl. P. L. Rose, The Italian Renaissance of Mathematics. Studies on Humanists and Mathematicians from Petrarch to Galileo, Genève, 1975, 198-199; D. R. Edwards, Ptolemy’s “Peri Analemmatos” – an Annotated Transcription of Moerbeke’s Latin Translation and of the Surviving Greek Fragments, with an English Version and Commentary, PhD dissertation, Brown University, 1984, 26-29; M. Losito, ‘La gnomonica, il libro X dei Commentari di Daniele Barbaro e gli studi analemmatici di Federico Commandino’, Studi Veneziani 18 (1989), 177-237: 219-237; R. Sinisgalli, S. Vastola, L’Analemma di Tolomeo, Firenze, 1992; A. Ciocci, ‘I manoscritti urbinati di Federico Commandino: Una ricognizione delle Buste 120 e 121 della Biblioteca Universitaria di Urbino’, Bollettino di Storia delle Scienze Matematiche 38 (2018), 237-269: 246-247; A. Ciocci, Federico Commandino. Umanesimo matematico e rivoluzione scientifica, Urbino, 2023, 96-109, 268-275 and 374.

Modern ed. None. Sinisgalli/Vastola have edited Ptolemy’s original text from ed. Rome 1562, but without Commandino’s commentary.