A steam hammer dominates the scene of a foundry, its massive frame pressing down on a glowing metal cylinder to shape it while workers labour in the smoky interior. Its invention, claimed by both François Bourdon and James Nasmyth, transformed heavy industry by delivering unprecedented force and precision in forging metal. Though Bourdon proposed a similar design in France, Nasmyth’s version became widely used, playing a crucial role in railway construction, shipbuilding, and large-scale manufacturing during the Industrial Revolution. Factories and chimneys stretch into the distance, reinforcing the scale of industrial expansion driven by such innovations. The painting depicts the 1839 invention as a major achievement in civil engineering.