The description and use of the sector, crosse-staffe, and other instruments : with a canon of artificiall Sines and Tangents, and the use thereof in astronomie, navigation, dialling and fortification ..
A 1636 London mathematical manual by Edmund Gunter, printed by William Jones, explaining the sector, cross-staff and tables of artificial sines and tangents for surveyors, navigators, dial-makers and military engineers. The woodcuts are line diagrams: compass-rose bearings lettered NE, ENE and SE, zodiac and planet symbols, hour lines, radiating scales and grids ruled over letterpress type.
