You are looking at a Danforth Kelvin-White Constellation Binnacle Ships Compass. Ships used these types of compasses because constellations change seasonally. They had to know which constellations were visible in the sky at different times of the year in each hemisphere. Based on the location of certain constellations in the sky, captains could determine what direction they were heading.
On the compass you will see that the numbers are very vibrant as well as N,S,E and W. You will also see the name DANFORTH/WHITE and Portland , Maine. Around the rim of the compass you will find the words Kelvin, White and Constellation along with the PAT # 2428346 and CC 2440. It comes with a hood that can be removed easily. You will also see a plaque on the housing of the compass that reads KELVIN-WHITE, Nautical Instruments Los Angeles, Boston, New York.
The compass was placed on a round wooden base that has a light brown roping around that. There is also a red light attached to the compass which helps with maintaining scotopic vision(night vision).
This is a beautiful nautical piece to add to your collection!
Compass Diameter: 7 1/2″
Base Diameter: 10 1/2″
Rope: 1/2′ thick
Weight: 16.5 lbs.