Le operazioni del compasso geometrico, et militare.
Terza edizione.Padua, Paolo Frambotto, 1649 Stock Code: 137602
NotesThird edition of Galileo's first published work, originally privately printed in 1606 in an edition of 60 copies only. The second edition, the first with the plate, was published by Frambotto in 1640. Galileo's compass, invented in Padua in 1597, was a calculating instrument making use of the proportionality between the corresponding sides of two similar triangles, designed for use by soldiers and merchants, which could be used for all sorts of complex calculations, from currency conversion to calculating cannon charge.
Small quarto (212 x 155 mm). Contemporary vellum over thin paper boards.
Woodcut device on title-page, woodcut initials and headpieces, woodcut illustrations and diagrams, folding engraved plate.
Early DSA library ink stamp on title-page and paper shelf label at foot of spine. Front pastedown torn away at centre, marginal browning to endleaves from paste used on turn-ins, first leaf with a few small wormholes, else an excellent copy, generally clean and fresh, the folding plate in fine condition.
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