Maudslay's micrometer, 1805.

Lucien Sharpe micrometer, c 1850.

Replica of original micrometer caliper by Jean Lauret Palmer, c 1848.

Dial micrometer, 1760-72. This is one of tw

Original fire box of Stephenson's 0-2- 2 locomotive 'Rocket', 1829.

Plate electrical machine, 1770.

Plate electrical machine, 1770.

Dial micrometer, 1760-1772.

Screw Micrometer, said to have been made by James Watt, probably 18th century.

Blood products on a bench, 1980.

Blood products on a bench, 1980.

Two children sitting on a bench. Two children sitting on a bench in South America, c 1930s.