Bologna, Giovanni Battista Ferroni, 1664, 4to, title with woodcut device, woodcut diagrams, initials, head- and tail-pieces, 4 folding engraved plates, 2ff. errata at end, title with small paper overslip changing “Del Molto” to “Il Molto”,
Born in Piacenza to a Milanese family, he joined the Jesuits in 1634.
Casati was professor of mathematics at the Jesuit Collegio Romano and then at the university of Parma. This work, one of many that he wrote, is a consolidation of Galileo’s work on the compass; it was reprinted three times before the end of the seventeenth century.
“…It not only contains good descriptions of usage, complete with many examples, but also discusses the manufacture of the device with two major foldout diagrams that could be used as patterns for the scales. Unlike many such works that state the method of usage but then give very simple problems involving triangles (for example), Casati provides the reader with realistic problems involving regular shapes” (Tomash & Williams, p.259).
Riccardi i, 271; Tomash & Williams C32],
Provenance: Grigorius Vivvarellus (early ink signature to title).