Extracts of Astrological Johannes Regiomontanus, Calendarium ( Peter Liechtenstein, Venice 1514)
De horologiis
De compositione quadrantis
De constitutione artificiose baculi Jacob
De confectione virge visorie Johannes Regiomontanus,
De compositione astrolabii (1475)
Declaratio priorum canonum et utilitatem astrolabii
ff. 102-114 Theophilus, book I-III (with variants)