Hirschvogel’s Geometria (1543)

Selected pages from Geometria by Augustin Hirschvogel (1503–1553), a German artist, mathematician, and cartographer known primarily for his etchings. In this vers…more

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

B. W. Betts’ Geometrical Psychology

Diagrams from Geometrical psychology, or, The science of representation: an abstract of the theories and diagrams of B. W. Betts (1887) by Louisa S. Cook, which det…more

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