A Guide to practical navigation : containing the rules and methods of solving problems in the most practical manner : the simplest and most complete method for finding a ship's position at sea, as well as a thoroughly approved method of finding the latitude and longitude at the same instant of time by double altitudes
A practical navigation manual by Edmund McNevin, published by Bancroft in San Francisco in 1878 for merchant officers and students learning to fix a ship's position at sea. The plates are line diagrams of compass roses, bearing angles and a brass semicircle leeway indicator with numbered scales, set among rule-and-column tables and back-pages of letterpress advertisements for local grocers and shirt factories, useful for hand-lettered labels following diagonal lines, engraved dial graduations, and Victorian trade-ad typesetting.
