Orontii Finei delphinatis, liberalivm disciplinarvm professoris regii, Protomathesis : opus uarium, ac scitu non minus utile quàm iucundum, nunc primùm in lucem foeliciter emissum : cuius index uniuersalis in uersa pagina continetur
Protomathesis is a 1532 Paris mathematics and cosmography textbook by the royal lecturer Oronce Fine, written in Latin for scholars and students of the liberal arts. Its pictures are precise line diagrams of sundials, astrolabe-like instruments, geometric constructions and celestial circles, showing how measured forms can be built from simple rules and labelled with clear lettering.
