** Saleroom notice: The final two advertisement leaves are in fact present, but misbound after Pp4 **

Mathematical instruments.- Gunter (Edmund) The Works of Edmund Gunter: containing the description and use of his Sector, Cross-staff, bow, Quadrant, and other Instruments: with a Canon of Artificial Sines and Tangents, to a radius of 10,00000 [sic] parts, and logarithms from an unite to 10000, with the use thereof in Arithmetick, Geometry, Astronomy, Navigation, and Dialling, edited by William Leybourn and Henry Bond, fourth edition, engraved frontispiece depicting mathematical instruments, engraved additional pictorial title depicting four men using various instruments,woodcut diagrams, that on H4v with volvelle, lacking 1 folding plate and advertisement f. at end, contemporary writing exercises and scribbles to endpapers and verso of frontispiece, occasional spotting, a few small stains, contemporary speckled calf, spine repaired, corners worn, rubbed and scuffed, [Wing G2240], small 4to, Printed by W[illiam]] L[eybourne], for Francis Eglesfield, 1662.

⁂ A rare work at auction. Gunter was an English clergyman, mathematician, geometer and astronomer, who in 1619 became Gresham Professor of Astronomy. He was primarily interested in the application of mathematics to real world tasks. The volume includes discussion of Gunter's chain, quadrant and scale, which were employed in astronomical, navigational and dialling calculations. The work was partly edited and published by William Leybourn, best know for his 1669 work on sundials and astrolabes. Leybourn had also published second and third editions of the Gresham Professor Samuel Foster's work on dialling and includes in the present volume sections devoted to Foster's work on instruments 'now published from his manuscripts'.