Refine by:
-
▾ Subject
- ASTRONOMY (4)
- Marine navigation (4)
- Horology (3)
- Longitude (3)
- Astronomical Observatories (1)
- Compasses (1)
- Magnetism (1)
- Nautical instruments (1)
- Navigational aids (1)
-
▾ Date
- 1700s C.E. (10)