Longitude

Longitude

by Dava Sobel
Publisher: Penguin Books
1st Edition, ©1995, ISBN: 9780140258790
Hardcover, 224 pages
Current Retail Price: $11.95
Used Price: $5.10 (1 in stock) Condition Policy

Describes the forty-year effort of John Harrison to invent the chronometer, the first instrument able to keep accurate time for navigational purposes.

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