Gun metal. Light micrograph in differential

Gun metal. Light micrograph in bright field

Tobold's laryngeal syringe, late 19th century.

The first atomic force microscope, 1985.

Camera with lens and metal focusing cover, c 1840.

Light bulb, 1900-1960.

Inhalation apparatus

Stem pesaries, c 1930.

Humby skin-grafting knife, first half of 20th century.

Tube of sterile silkworm gut, late 19th or early 20th century.

Tobold's laryngeal syringe, early 20th century.

Tobold's laryngeal syringe, early 20th century.