In our museum you can always find something unique
and interesting like this compass, which was a great innovation in the 19th
century. It was invented by famous American physicist Edward S. Ritchie.
It comes with six needles and a flat card with central buoyancy and it’s
filled with liquid. Compass is air tight in metallic case and it could be read
at a distance so it would not be affected by any iron on or about the deck of a
ship. Special features help in keeping liquid in one place and prevent
oxidizing of magnet or card. One that you can see on a picture was made in 1910
for US NAVY and it comes with their exclusive number.
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