The Tempest Prognosticator

The Tempest Prognosticator

 Blogger 1386 729 1600 Merryweather2
I want to say this could be a cool remake, sorta – but I’m not sure how well this would be received –

The Tempest Prognosticator, also known as the Leech Barometer, is a 19th century invention by George Merryweather in which leeches are used in a barometer. The twelve leeches are kept in small bottles inside the device; when they become agitated by an approaching storm they attempt to climb out of the bottles and trigger a small hammer which strikes a bell. The likelihood of a storm is indicated by the number of times the bell is struck.

Tempest Prognosticator, leech barometer – [via] Link.


  • The Tempest Prognosticator (aka Leech Barometer) – Link.
  • Dr. George Merryweather’s 1851 Tempest Prognosticator – Link.
  • Working replica? – Link.
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