Fabrica, et vso del compasso di proportione : doue insegna à gli artefici il modo di fare in esso le necessarie diuisioni, e con varij problemi vsuali mostra l'vtilità di questo stromento
A 1664 Italian treatise by the Jesuit mathematician Paolo Casati, printed in Bologna by Giovanni Battista Ferroni, explaining how to make the divisions on a proportional compass for craftsmen and illustrating its uses through practical problems. The pictures are small geometric diagrams with lettered points, dotted construction lines, and mechanical sketches such as a pendulum on a beam and a rolling cylinder; a designer could borrow their clean line-drawn schematic style for technical diagrams, labelled figures, or instructional graphics.
