Artificial joints and ligaments and replacement blood vesels, c 1985.

Music system used with MRI (magnetic resonance imaging) scanner, c 1990.

Wilhelm Conrad Roentgen, German physicist, c 1900.

Image dissector tube.

Emitron television camera tube, 1932.

The 'Penetrator' X-ray tube, 1896-1900.

'Ascent and Descent of Mr Hampton's Balloon and Parachute', 3 October 1838.

Walthamstow tube station platform, 2005.

Finchley Road tube station at night, London, 2005.

Torpedo tubes in the interior of a British submarine, 1914-1918.

Bone. Light micrograph in differential

Extrusion die for elastic band tubing, 1965-1975.