Tonnelot Mercury Barometer

Over the years, enormous ingenuity has been directed to the problem of designing a barometer that could be safely moved from one place to another. One solution was to have the cistern full during transport, and mechanically expanded to a proper size for actual use. This example, which is of that sort, is marked “Tonnelot à Paris.” The signature refers to Jules Tonnelot, a Parisian who showed his meteorological instruments at the international exhibitions held in 1878, 1889 and 1900.
Currently not on view
Object Name
barometer, mercury
Tonnelot, Jules
overall: 35 in; 88.9 cm
place made
France: Île-de-France, Paris
ID Number
accession number
catalog number
See more items in
Medicine and Science: Physical Sciences
Measuring & Mapping
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
U.S. Signal Corps

Visitor Comments

Add a comment about this object

**Please read before submitting the form**

Have a comment or question about this object to share with the community? Please use the form below. Selected comments will appear on this page and may receive a museum response (but we can't promise). Please note that we generally cannot answer questions about the history, rarity, or value of your personal artifacts.

Have a question about anything else, or would you prefer a personal response? Please visit our FAQ or contact page.

Personal information will not be shared or result in unsolicited e-mail. See our privacy policy.

Enter the characters shown in the image.