'A view of Chelsea Water Works', 1750.

Agostino Ramelli, Italian engineer and inventor, 1588.

John Smeaton, English mechanical and civil engineer, c 1770.

Benjamin Hick, British engineer, c 1810-1842.

Machine for raising water from a river, 1588.

Machine for bridging a moat and scaling walls, 1588.

Windmill for raising water from a well, 1588.

Draining water from behind a coffer-dam, 1588.

Machine for raising water from a well, 1588.

Device for lifting a door from its hinges, 1588.

Ballista, or crosbow for projecting heavy misiles, 1588.

Machine for removing excavated earth, 1588.