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Uttmark's guide to the United States local inspectors examination for masters and mates of ocean going steam and sailing ships (1919)
Uttmark, Fritz E · [New York] The Author · leaf 89
\ Vnrnllel Killers Mercurial Barometer … Explanation of the variousparts of the sextant A—Index glassB—Horizon glassC—Telescope collarD—Telescope■D E—ShadeglassesF—Sliding limbG—Tangent screwH—Magnifying glassI—HandleJ-ArcK—Vernier L—Frame of instrumentM—Adjustment screws SEXTANTS NAVIGATION PROBLEMS The Lead(See page 49.) Sounding…Navigation
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