Anamorphic pictures, early 18th century.

Anamorphic picture, British, c 1750.

Anamorphic picture, early 18th century.

'Horse seen with an oblique view', early 18th century.

Double-barrelled air pump, late 18th century.

'New Universal' microscope, c 1763.

'New Universal' microscope, c 1763.

'New Universal' microscope, c 1763.

Le Prince 16-lens camera, American, 1886.

Apparatus for demonstrating the elasticity of a spring or wire, 1762.

Electrical chimes and fulminating tubes, 1780s.

Bras sector by George Adams, 1756-1760.