Chelsea Clock Co. 12" Marine Clock for Ashcroft Mfg. Co., New York. A very unusual clock with an inclinometer installed on the dial below 12. The engraved scale below the indicator hand is marked from 30 to 15 to 0 to 15 to 30. The mechanmism has a counter weight on the back of he dial that moves the hand to show the heel or list of the vessel. Probably used to insure the ship was loaded with the cargo distributed evenly from port to starboard. The hour hand and minute hand are aluminium making them easier to form to clear the inclinometer mechanism on the dial. Serial number 52443 on the movement dates the clock to 1909. Uncommonly, for a gauge company clock, the case is also stamped with serial number 52443. The dial is stamped 2999 below 6.