Rutherford maximum and minimum thermometer, 1794.

Artificial arm, 1920-1925.

Ship's watch, 18th-19th century.

Artificial arm, 1920-1925.

Bone forceps, 1917.

Sir Humphry Davy, English chemist, c 1800.

'Galvanism in Piccadilly', c 1800.

Thumbscrew, probably English, 1601-1900.

Circus tightrope walkers in action, c 1930s

Pullin motor bicycle, 1919.

Persian equal-arm balance, c 1800-1810.

Flexon spectacles, c 1990s.