Opera mathematica continentia elementa geometriae discursum de motulocali staticam et duas machinas, ad conficienda horologia solaria, habiles
Opera mathematica is a 1692 Latin mathematics textbook by the Jesuit Ignace Gaston Pardies, published in Germany by Tobias Oehrlingius for students of geometry, mechanics and sundials. Its pictures are simple black-and-white woodcut diagrams of levers, pulleys, pendulums and balances, with dotted construction lines and lettered points, useful to a designer wanting clean schematic line art with labelled geometry.
