Tractatio geometrica de quadratura circuli in decem capita distributa. Adversus errores tam veterum, quam recentiorum mechanicorum
A Latin geometry treatise on squaring the circle, written by Jakob Christmann and printed in Frankfurt in 1595 by the Paltheniana press for P. Kopf, aimed at scholars and mathematicians. Its two pictures are plain line diagrams of circles, squares and triangles with lettered points and tick-marked measuring scales, set against faded printed pages, offering a designer clean geometric linework and diagram lettering to borrow for schematic or technical graphics.
