Hooke Microscope, c 1675.

Hooke Microscope, c 1675.

Hooke microscope, c 1675.

Parson's original Steam Turbine generator, 1884.

Hand of an eight year old girl, 1896.

Whole model rigged, of a Revenue Cutter, la

Model of a Fowey revenue cutter, c.1800

Pyrophone, 1869.

HM Submarine, 'E' clas, 1912.

Monaural stethoscope, c 1840s.

Laennec monoaural (one ear) stethoscope, late 19th century.

Four monoaural stethoscopes, 19th century.