Jacobi Rohaulti physica
Jacobi Rohaulti physica is a 1718 natural philosophy textbook by Jacques Rohault, edited with notes by Samuel Clarke and published in London by Jacob Knapton for students of physics. Its plates are geometric diagrams of lines, angles, and light rays, with lettered points and labelled figures numbered by plate. A designer could take from them the clean linear diagram style, with fine hairline construction lines, lettered vertices, and simple triangular and curved forms suited to technical graphics.
