Uttmark's guide to the United States local inspectors examination for masters and mates of ocean going steam and sailing ships
A 1919 self-published study manual by Fritz E. Uttmark, printed in New York to drill American merchant seamen for the local inspectors' examination for masters and mates of steam and sailing ships. The figures are spare line diagrams of the celestial sphere — circles crossed by solid and dashed arcs, lettered points for zenith, equator and star — usable as geometric marks, endpapers or chapter openers.
