Opera geometrica Evangelistæ Torricellii ..
Opera geometrica is a 1644 Florentine geometry and mechanics treatise by the mathematician Evangelista Torricelli, printed in Florence for a learned readership. Its pictures are dense black-and-white geometric diagrams of ellipses, parabolas and lettered construction lines, which a designer might take as precise, schematic linework for abstract patterns or technical layouts.
