Slide rule belonging to James Watt, Scottish engineer, 1790-1819.

Bink's burettes and a Wollaston slide rule, 1814.

Everard's Sliding Rule, 1739.

A bearded man after using hair restorer, magic lantern slide, 19th century.

A bald man applying hair restorer, magic lantern slide, 19th century.

Alexander Performance Scale Test material, by Thomas Nelson and Sons Ltd, c.1950.

A circus clown with a dog jumping through a hoop, 19th century.

A man leaning against wet paint. Hand-colou

A man with wet paint on his back. Hand-colo

Stathams Chemical Magic chemistry set, c 1920-1940.

Model of a cylindroid, 1895-1900.

Model of a cylindroid, 1895-1900.