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Science Museum Group Collection
© The Board of Trustees of the Science Museum
Pulsometer, glass, with content
Invented by Benjamin Franklin (1706-90), an American politician and natural philosopher in 1768, this object is known as a pulse glass. The magenta coloured liquid is sealed in the glass, creating a vacuum. When one of the glass balls is held in a person's hand, the liquid boils. Franklin viewed his invention as an intellectual curiosity.
Details
- Category:
- Clinical Diagnosis
- Collection:
- Sir Henry Wellcome's Museum Collection
- Object Number:
- A40217
- Measurements:
-
overall: 210 mm x 55 mm, 38 mm, .04kg
- type:
- pulse glass
- credit:
- Wellcome Trust (Purchased from Stevens)
