Inclinationum appendix, seu, To geometriae panro̊ma
This is a 1648 geometry treatise by Antonio Santini, printed in Macerata by Filippo Camaccio for students and mathematicians of the period. Its pictures are plain line diagrams of circles, chords, and straight lines labelled with capital letters, set on a lightly toned printed page, with no shading or ornament; a designer might borrow their clean, precise linework and the way letters sit at points of intersection.
