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Sumner, Capt. Thomas H. NEW METHOD OF FINDING A SHIP'S POSITION AT SEA - 1851

$300.00

A new and accurate method of finding a ship's position at sea, by projection on Mercator's chart ... The principles of the method being fully explained and illustrated by problems, examples, and plates, with rules for practice, and examples from actual observation. By Capt. Thomas H. Sumner. 1851.
8vo gilt-decorated impressed brown cloth, 3rd ed.,revised, no jacket, as issued, boards stained, heavy foxing to pages, akin to most other copies of this particular edition, 9 plates present (no foxing) clean and bright, 90 pp.
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A new and accurate method of finding a ship's position at sea, by projection on Mercator's chart ... The principles of the method being fully explained and illustrated by problems, examples, and plates, with rules for practice, and examples from actual observation. By Capt. Thomas H. Sumner. 1851.
8vo gilt-decorated impressed brown cloth, 3rd ed.,revised, no jacket, as issued, boards stained, heavy foxing to pages, akin to most other copies of this particular edition, 9 plates present (no foxing) clean and bright, 90 pp.

A new and accurate method of finding a ship's position at sea, by projection on Mercator's chart ... The principles of the method being fully explained and illustrated by problems, examples, and plates, with rules for practice, and examples from actual observation. By Capt. Thomas H. Sumner. 1851.
8vo gilt-decorated impressed brown cloth, 3rd ed.,revised, no jacket, as issued, boards stained, heavy foxing to pages, akin to most other copies of this particular edition, 9 plates present (no foxing) clean and bright, 90 pp.