Assorted machines and equipment. 19th-century artworks of various ancient and modern technologies and machinery. Three water wheels are shown: (undershot, top left; overshot, bottom right; and Persian Wheel, centre right). Three weighing apparatuses are shown: Ancient Egypt (centre left), Ancient Rome (top right), and modern weighing scales (bottom centre). Other examples of modern (19th century) machines are a steam engine firebox (upper left), and a hydraulic press (bottom left). Artwork from 'Knight's Pictorial Gallery of Arts' (1858) by the English publisher Charles Knight (1791-1873).