M. Vitrvvii ... De architectvra libri decem: ad Augustum Caesarem accuratiß. conscripti & nunc primum in Germania ... exornati
This is a 1543 Latin edition of Vitruvius's ten-book treatise on architecture, edited with commentary and printed in Germany for scholars and builders, held by Heidelberg University Library. The woodcut pages show a machine with a crank and frame, an aqueduct system with channels and piers, and a waterwheel mounted on a timber frame. A designer could take the crisp, hatched linework and the mechanical diagrams, with their small lettered keys, as models for technical line illustration.
