Search Results: libri tres in quibus primo constructio by horcher philipp

1605. Mainz, Balthazar Lipp, 1605. 4to. Bound in a beautiful 18th century full mottled calf binding with double gilt line-borders to boards. Edges of boards gilt. Expertly rebacked perfectly matching the boards and the gilding. With gilt leather title-label and gilt ornamentations. End-papers renewed. B2 and B3 defective in lower blank margins, not affecting text. A nice and clean copy. 53, (1) pp. + 1 folded plate and numerous illustrations in text. The exceedingly rare first edition of the first work to describe the construction of the adjustable proportional compass – the first work to describe both its construction and its application. The adjustable proportional compass became an indipensable tool for calculations and measurements for over three centuries. The proportional compass was a seminal calculating instrument in use from the end of the sixteenth century until the nineteenth century. Consisting of two rulers of equal length joined by a hinge, it was a precursor to the sector and… Read More