Iron lock, key and bolt, English, 18th century.

Iron lock, key and bolt, English, 18th century.

Slave whip, 1851-1900.

Surgical knife, South Nigerian, c 1871-1930.

Creda No 726 electric toaster, c 1914-1920.

Cat o' nine tails, 1700-1850.

Device for measuring brain activity during an epileptic fit, 2001.

Device for measuring brain activity during an epileptic fit, 2001.

Carbon filament lamp, 1890-1920.

Working at a utensil factory, Warwickshire, 6 April 1945.

Surgical instrument set, Persian, 18th century.

Surgical instrument set, Persian, 18th century.