This was a leading centre for printing and Petreius was the best printer in town. However, since he was unable to stay to supervise the printing he asked Andreas Osiander, a Lutheran theologian with considerable experience of printing mathematical texts, to undertake the task.
Ito ay isang nangungunang center para sa mga imprenta at Petreius ay ang pinakamahusay na printer sa bayan. Gayunman, dahil siya ay hindi upang manatili sa mangasiwa ng imprenta siya nagtanong Andreas Osiander, isang Lutheran teologo na may kakaunti karanasan ng imprenta matematiko teksto, upang magsagawa ng mga gawain.