Practical navigation, or, An introduction to the whole art : containing the doctrine of plain and spherical triangles : plain, mercator, great-circle sailing, and astronomical problems : the use of divers instruments ... : sundry useful tables in navigation, and a table of 10,000 logarithms, and of the logarithm-sines, tangents, and secants
A navigation textbook by John Seller, printed in London in 1694 for sailors and students learning plane and spherical trigonometry, sailing methods and logarithm tables. Its three diagrams are geometric constructions of arcs, chords and circles with lettered points, drawn in plain black line on tinted paper, giving a designer clean compass-and-ruler style figures for diagrammatic graphics.
