Symington's original experimental marine steam engine with two vertical cylinders (1788), designed by William Symington for Patrick Miller and tested at Miller's Dalswinton estate, later re-erected by John Penn and Sons in 1854 after having been acquired for the Museum Original marine steam engine 1788; 1854
Two removable paddle wheel covers for the model of the early paddlewheel steamboat P.S. 'Charlotte Dundas' (1801) by the Science Museum Workshops, South Kensington, London, England, 1903. The model was based on a model lent to the Science Museum by W. H. Rankine. The actual P.S. 'Charlotte Dundas' (1801) was designed by William Symington and used on the River Forth and Clyde Canal. Two removable paddle wheel covers for the model of the P.S. 'Charlotte Dundas' 1903
