Cruickshank's galvanic trough, 1801-1838.

'Trough' battery, early 19th century.

Cruickshank's galvanic trough, 1801-1838.

A pioneering ball and stick atomic model set, 1860s.

Carved wooden medicine box, African.

Cylindrical form of Napier's bones, c 1700.

Octahedral crystal model, late 18th-early 19th century.

'Military Pattern or Standard Type Legs', 1920-1930.

Casts of Korean bronze type, 1406.

Painted wooden face-mask, Sinhalese, 1771-1900

Collection of sexual aids in a wooden box, Japanese, 1930-1935.

Rubber diaphragm.