Caption:
Voutes, trompes, escaliers and other work pieces, Vaults, trumpets and stairs, Tab. 97, after p. 244, Augustin-Charles d'Aviler, Vignola, Michelangelo, Leonhard Christoph Sturm, Hertel: Ausführliche Anleitung zu der gantzen Civil-Bau-Kunst [...]. Augspurg: bey Johann Georg Hertel, 1747