L'vsage dv compas de proportion
L'vsage dv compas de proportion is a 1664 Rouen treatise by Denis Henrion (ca. 1580-ca. 1632) explaining the proportional compass, a geometry instrument for measurement and construction. Its pictures are small engraved geometric diagrams with lettered points, lines, arcs and circles, showing how to divide angles, construct figures and transfer proportions; a designer might draw on their clean, precise linework and the compass-and-straightedge logic of their layouts.
