The gauge is marked Nautical Miles Chas C. Hutchinson Boston Made in USA. It measures approximately 2 3/4" in diameter and is heavy. It does have some rust and patina. It has rope and rotator, and an extra piece of glass. The instruction manual is included but is in very bad shape. It comes in a wooden box that measures 16" x 9" x 5". The box has signs of wear, but solid and intact. It does have some dings, chips and scratches. I do not know if the gauge works. This item is being sold as is so please look at the pictures carefully. No reserve.