About 228 results ()
Refine by:
-
▾ Collection
- Board of Longitude (228)
- Papers of John Pond (138)
- Papers of the Board of Longitude (90)
-
▾ Subject
- Marine navigation (170)
- Time Measuring Instruments (165)
- Longitude (105)
- Astronomy (44)
- Nautical instruments (22)
- Legislation (18)
- Horology (11)
- Latitude (11)
- Tides (8)
- Winds (8)
- Astronomical Observatories (6)
- Colonial administration (6)
- Geographical exploration (5)
- Navigation (science) (5)
- Mathematics (4)
- Magnetism (3)
- Navigational aids (2)
- Ocean currents (2)
- Science (2)
- Geodesy (1)
-
▾ Date
- 1700s C.E. (2)
- 1800s C.E. (226)
- 1900s C.E. (2)