Refine by:
-
▾ Subject
- Marine navigation (1064)
- Time Measuring Instruments (1057)
- Longitude (744)
- ASTRONOMY (550)
- Nautical instruments (218)
- Transit of Venus (171)
- scientific instruments (169)
- Geographical exploration (141)
- Horology (140)
- Navigational aids (116)
- observatories (96)
- Legislation (81)
- Magnetism (75)
- Chronomoters (73)
- Navigation (science) (69)
- Astronomical Observatories (50)
- Colonial administration (48)
- Navigation (48)
- Latitude (47)
- Journal (43)
- TRAVEL (43)
- SCIENCE (41)
- Discoveries in geography (35)
- Jupiter (Planet) (24)
- Tides (21)
- Winds (21)
- MATHEMATICS (19)
- MEDICAL SCIENCES (19)
- Medicine (19)
- Ocean currents (12)
-
▾ Date
- 1600s C.E. (1)
- 1700s C.E. (473)
- 1800s C.E. (1676)
- 1900s C.E. (5)