Model of a Support in a Dry Dock, Schematic model of part of a dry dock, with part of a ship's wall on blocks supported by a composite goat: with a rack and pawl the goat can be set in different positions adapting to the slope and height of the ship's surface., anonymous, United States of America, 1849, wood (plant material), brass (alloy), h 20.2 cm × w 30.3 cm × d 16.3 cm.
Model of a Support in a Dry Dock, Schematic model of part of a dry dock, with part of a ship's wall on blocks supported by a composite goat: with a rack and pawl the goat can be set in different positions adapting to the slope and height of the ship's surface., anonymous, United States of America, 1849, wood (plant material), brass (alloy), h 20.2 cm × w 30.3 cm × d 16.3 cm