Cambridge Digital Library

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1. ▸  Collection
   • Royal Greenwich Observatory Archives (14)
2. ▸  Subject
   • ASTRONOMY (14)
   • Astronomy (14)
   • Longitude (13)
   • Nautical instruments (10)
   • Jupiter (Planet) (6)
   • Jupiter (planet) (6)
   • Time Measuring Instruments (5)
   • Magnetism (4)
   • Marine navigation (3)
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   • Navigation (science) (1)
3. ▸  Page has transcription
   • No (14)
4. ▸  Page has translation
   • No (14)
5. ▸  Languages
6. ▸  Date
   • 1800s C.E. (14)