Dall-Kirkham reflecting telescope, 1960-1975.

Children playing baseball in a tenement playground, USA, c 1913.

Detail of autographic curve for Tottenham, London, 1816.

Roman vaginal speculum, 100 BC-400 AD.

Orrery with armillary bands, 1740-1747.

Rowley's original orrery, 1712-13.

Daniel Spill's Ivoride Works, Homerton, London, c 1870s.

Autographic curve,Tottenham, London, 1817.

'Sir William Thomson', 1892.

Condensing beam engine by James Watt & Co, late 18th century.

R E B Crompton, English inventor, 1920s.

False colour photograph of the Sun and the Moon, taken from Skylab, 1970s.