Refine by:
-
▾ Subject
- Longitude (15)
- Legislation (10)
- ASTRONOMY (7)
- Time Measuring Instruments (7)
- Marine navigation (5)
- Nautical instruments (4)
- Geographical exploration (3)
- Horology (3)
- Magnetism (2)
- Navigational aids (2)
- PUBLISHING (2)
- Geodesy (1)
- Surveying (1)
-
▾ Date
- 1700s C.E. (21)
- 1800s C.E. (23)