[7] It was based on a compilation by Robert of Chester and also includes material from: Arithmetica by Jordanus de Nemore, commentary on Euclid by Anaritius, and additions by Campanus himself.

[7][8] It would later become the first printed edition of Euclid,[7] published by Erhard Ratdolt in Venice in 1482 as Preclarissimus liber elementorum Euclidis perspicacissimi.

[9] In the field of astronomy, he wrote a Theorica Planetarum in which he geometrically described the motions of the planets as well as their longitude.

Campanus gave precise instructions on using the tables, and made detailed calculations of the distances to the planets and their sizes.

This work has been called "the first detailed account of the Ptolemaic astronomical system... to be written in the Latin-speaking West.