Venetia: Giordano Ziletti, 1564. FIRST ITALIAN EDITION. With printer's device on title, 16 engravings (8 full-page), woodcut historiated and putti initials, head- and tail-pieces. Old liimp vellum, binding slightly warped; interior in excellent condition with a very light stamp on the first blank leaf containing the initials L and G with wedding bells underneath the initials. First Italian edition (after the first French edition of 1555) of a valuable treatise on the author's newly invented quadrant for geometrical measuring and surveying. The device, which he named holometre, resembled a cross-staff, and was mainly intended for the delineation of cartographical maps and surveying. However, and of great interest, the instrument gave instant results, without the need for calculations in the age before logarithms.Foullon (c. 1513-1563), French poet and mechanic, was director of the Royal Mint and valet de chambre to King Henry II. He is chiefly known for the invention of this instrument, for which Henry II granted the first ever patent in France to Foullon. "The patent grant bears the distinction of being the first in history to require a full disclosure of the invention so that the public could use the innovation after Foullon's patent rights had expired" (See Klitzke, 620). (Inventory #: 15589)
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