The Operazioni del compasso geometrico et militare di Galileo Galilei. Terza editione

Padova, per Paolo Frambotto, 1649. Soft cover. Condition: Good condition. In-8 paperback, silent cover of the period, title - 2 ff. - 80 pp. Headband, initials and dead ends. Geometric sketches in the text. Folding plate inset. Faded cover, snag and tarnish. Large continuous humidity of the last two 16 ff notebooks. Cut to title without infringement. As is. Second illustrated edition of Galileo's first published work. The first edition, not illustrated - perhaps because Galileo wanted to maintain his monopoly on the construction of the instrument -, appeared in only 60 copies in 1606. The plate engraved in fine represents a compass of proportion, the ancestor of the slide rule. In this work, Galileo takes the compass of military proportion and develops it into a calculator for more general use, capable of solving any practical mathematical problem, without the need to have had a previous mathematical education, and sufficiently precise for purposes. ordinary practices. in-8 °. Ref. No. Seller Inventory # 94491