Mathematical instruments, 1747.

Set of mathematical instruments by George Adams, mid 18th century.

Mortice marking gauge c 1850.

Mortice marking gauge.

MIL DAP Parallel Processor Computer, c 1979.

A steam locomotive hauling a goods train, passing a steam locomotive on a parallel track,A1969.70/Box 5/Neg 1241/31

Photographic negative taken by John Clarke of two steam locomotives with trains on parallel track,A1969.70/Box 5/Neg 1239/29

'Length of spark parallel to axis tube' taken from Blondlot's 'N Rays', 1905.

'Raudnitz on the Elbe', Czechoslovakia, 19th century.

Primitive cart.

Electric light at the British Museum, London, 1890.

TY 'Tarantula', 1902.