Beschreibung:

GUNTER, Edmund (1581-1626). The Works: Containing the description and use of the Sector, Cross-staff, and other Instruments, With a Canon of artificall Sines and Tangents... a new treatise of Fortification, Whereunto is now added the further use of the Quadrant fitted for the daily preactise. By Sam. Foster. London: F. Neile for Francis Eglesfield, 1653.
GUNTER, Edmund (1581-1626). The Works: Containing the description and use of the Sector, Cross-staff, and other Instruments, With a Canon of artificall Sines and Tangents... a new treatise of Fortification, Whereunto is now added the further use of the Quadrant fitted for the daily preactise. By Sam. Foster. London: F. Neile for Francis Eglesfield, 1653. Small 4 o (183 x 139 mm). Engraved title, engraved plate of "Gunter's Scale," 4 plates, two woodcut illustrations in text, numerous diagrams and tables, some full-page. (Some light browning and staining.) Contemporary calf (rabacked). FIRST EDITION: "easily the most substantial of Gunter's [works]" ( DNB ). Gunter, mathematician, instrument-maker and professor of Astronomy at Gresham College, invented surveying and nautical instruments, "his Line of Numbers was the first step towards a slide-rule while Gunter's Line continued in use long after the development of the true slide-rule" (Taylor). Even though "Third edition" is printed on title page, no earlier edition is recorded in STC or Wing, it is likely that earlier individual editions of the Sector and the Canon were taken into account. His Canon triangulorum first published in 1620, was reprinted in the above work, with a separate title-page, dated 1652. Adams & Waters 1913; Crone 195, 200; Taylor Mathematical Practitioners 210; Wing G-2239.