Praxis artis muniendi modernae, das ist, ausführliche Anweisung des Fortification-Baues, wie derselbe beedes von Erde, als auch mit Mauerwerck, sambt seinen Fundamenten anzufangen, mit Ordnung zu vollführen, auch endlich gegen feindlichen Anfall zu defendiren sey
A 1689 German fortification manual by Christoph Heer, published in Frankfurt by Johann David Zunner, written as a practical guide for building fortifications in earth and masonry. Its plates are engraved technical diagrams of ground plans, bastion profiles, brick-laying patterns, sluice and bridge frames, and siege equipment, drawn in clean black line with numbered keys. A designer could draw on their crisp hatching, measured plan geometry and dense stone and brick textures for schematic or heritage-style graphics.
