The works of Edmund Gunter : containing the description and use of the sector, cross-staff, bow, quadrant, and other instruments : with a canon of artificial sines and tangents to a radius of 10.00000 parts, and the logarithms from an unite to 10000 : the uses whereof are illustrated in the practice of arithmetick, geometry, astronomy, navigation, dialling, and fortifcation : and some questions in navigation added by Mr. Henry Bond ... : to which is added, the description and use of another sector and quadrant, both of them invented by Mr. Sam. Foster ..., furnished with more lines, and differing from those of Mr. Gunters both in form and manner of working. --
Edmund Gunter's 1673 London collection of mathematical works, printed by A.C. for Francis Eglesfield, describes the sector, cross-staff, bow and quadrant with logarithm and sine tables for practical arithmetic, navigation and dialling. The pictures are precise line diagrams: geometric constructions, plotted grids of radiating lines, and compass-rose navigation charts with lettered points, useful for a designer seeking technical scientific schematic linework and labelled diagram layouts.
