Nικολάου Σοφιανοῦ περὶ κατασκευῆς καὶ χρήσεως κρικοτοῦ ἀστρολάβου. Printed [Venice, 1544]. Dedicatory prologue to Pope Paul III (ff 1r-1v), inc. Πολλῶν μὲν καὶ ἄλλων ἕνεκεν, ἁγιώτατε πάτερ. Text inc. Κατασκευάσθωσαν δύο κρίκοι. See Legrand 1885, I. pp. 265-6.
Περὶ ἐγκλινομένων, imperfect. Printed in full in Aldus' Thesaurus Cornucopia e, Venice 1496, f. 239v and in the appendix to his Dictionarium Graecum, Venice 1524, f. 95v