This vintage wooden nautical heading box measures 5 3/4″ wide x 14 1/4″ long x 5 1/4″ tall not including the dials on the top. Made of teak and brass. Box weighs about 7 pounds.
Also known as a manual heading indicator, this device worked as a navigation aid. It would usually be placed over or near the navigation compass. The knobs at the top of the box would be turned to indicate the numbers of the heading direction of the vessel. The crew would look at this number throughout the voyage to make sure the ship stayed on the correct heading.