Novum Instrumentum Geometricum (1607)

Illustrations from Leonhard Zubler’s Novum Instrumentum Geometricum (1607). Zubler was a Swiss goldsmith and instrument maker who is credited with introducing the…more

Fortification Theory (1600)

Images from Jean Errard’s Fortification Réduicte Art and Démonstrée (Paris, 1600), a seminal work in fortification theory. Errard (1554-1610) was a mathematici…more