Mathematical instruments, 1747.

Fruit and vegetable peeler, 1863.

Cedric Lee, pioneering aviator.

Cayley's 'aerial Carriage', 1843.

Casein plaque with moulded head of Napoleon Bonaparte, c 1900.

Art Deco wedge-shaped stamp wetter, 1948.

The transept of the Crystal Palace under construction, Hyde Park, London, 1850.

Rectangular protractor, late 18th century.

Winter landscape. Hand-coloured magic lante

Small silver disc with glider design by Sir George Cayley, 1799.

Sir George Cayley, British aviation pioneer, c 1820.

Sir George Cayley, British aviation pioneer, c 1850.