Cambridge Digital Library

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1. ▾ Collection
   • Board of Longitude (12)
   • Longitude Essays (2)
   • National Maritime Museum Manuscripts (6)
   • Papers of the Board of Longitude (4)
2. ▾ Subject
   • Astronomy (6)
   • Marine navigation (4)
   • Horology (3)
   • Longitude (3)
   • Compasses (1)
   • Magnetism (1)
   • Nautical instruments (1)
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   • Navigational aids (1)
3. ▾ Date
   • 1600s C.E. (1)
   • 1700s C.E. (12)
   • 1800s C.E. (4)