object
Marine chronometer
A named boxed precision timekeeper for finding longitude at sea. Not a pocket-watch alone, not a published sextant, and not a bare chronometer dump.
Also known as Sea chronometer · Longitude chronometer
object
A named boxed precision timekeeper for finding longitude at sea. Not a pocket-watch alone, not a published sextant, and not a bare chronometer dump.
Also known as Sea chronometer · Longitude chronometer