Sunday, February 16, 2014
1840 Nautical Instruments
I wished that I could have picked it up, but it was secured in the box.
The last photo is of a gimbaled compass. The box sits on a table on a ship. The ring has an axis running through the box. A second axis, at right angles to the first one, runs through the compass. The compass is bottom-heavy, and by having two independent, orthogonal axes, the compass is able to remain steady while the boat pitches and yaws on a body of water.
Now, of course, I can't remember if ships were getting to Fort Vancouver by sailing around the tip of Africa and heading east, or if they sailed around South America, or both.