Plan your visit. 225 Madison Avenue at 36th Street, New York, NY 10016.

Plan your visit. 225 Madison Avenue at 36th Street, New York, NY 10016.

Study of Spheres, from Civil Architecture

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Civil Architecture includes a number of didactic sheets outlining visual models for technical draftsmanship. This page offers instructions for creating volume and using light and shadow to define complex three-dimensional objects, like armillary spheres and terrestrial globes. The caption at bottom, “Globe of the Earth, or a framework of a dome,” reflects the wide range of subjects encompassed by Lequeu’s guidelines.

Jean-Jacques Lequeu (1757–1826)
Study of Spheres, from Civil Architecture,
Pen and black ink, gray wash
Bibliothèque nationale de France, Departement des Estampes et de la photographie