Model of Robert Duncan's screw propeller, with stern frame and rudder, as fitted to the Egyptian government yacht 'Sareea 1886-1887
Model, of a cycloid form paddle wheel, based on Joshua Field's initial ideas and Elijah Galloway's later patent 1897-1898
Working model of the double trunk steam engines, as used on HMS 'Minotaur (1867) and HMS 'Northumberland' (1868) 1845