'Atom Tracks' catalogue 1937.

'Electric Build-it Set', c 1956-1960.

Anatomical figure of a female torso, American, 1979.

Early car factory, Bishops Green, Coventry, West Midlands, 1907.

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

Orrery, 1910-1920.

Dalton's wooden atomic models, early 19th century.

Diasonograph Mk1 ultrasound scanner, 1961.

'Ronald Reagan' with Cruise missile, Albert Square, Manchester, 1984.

Remington Arms lock-stitch sewing machine, 'Empire' model, 1870.

Watt's separate condenser model No 1, 1769.

Watt's separate condenser model No 1, 1769.