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Code 7849
EUR 850.00
In stock
1709291791Code 7849 Aneroid BarometerAntique English marine aneroid barometer from the late 19th century in oak wood carved as a top, brass and glass. Signed John Barker & C Ltd Kensingotn.
Good condition. Working. Diameter 24 cm, thickness 6 cm.
It is an ancient measuring instrument whose pressure-sensitive organ is a metal box called a barometric capsule. The capsule contracts or expands as a result of changes in pressure and its movements are transmitted to an indicator hand via a mechanical system.
The development of this type of barometer is due to Bourdon, a French inventor and industrialist (Paris 1808-1884). He founded a factory for the construction of steam engines in Paris in 1835; in 1849 he invented the metallic manometer, to which he linked his name, and in 1853 a type of aneroid barometer.
Since ancient times, man, as a farmer and navigator, has observed and attempted to predict climate trends. The scientific study of the changes that occur in the atmosphere began in the mid-17th century, in relation to experiments aimed at demonstrating the existence of a vacuum, which the ancient philosophers denied because "nature abhors a vacuum!".
Evangelista Torricelli (1608-1647), mathematician and physicist, disciple of Galileo, was the first, in 1643, to build an instrument capable of detecting changes in air pressure, which he understood to be linked to changes in the weather.
FAQ
Do you provide an authenticity certificate/expertise?
Of course! The legislative decree n. 42/2004 stipulates that who sells works of art or historical and archaeological items has the obligation to deliver to the purchaser the documents attesting to the authenticity of the object, or at least to submit the documents relating to the probable attribution and origin. Antik Arte & Scienza provides an expertise (as warranty) that contains a description, period and assignment or the author, if known, of the item.
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Italy: delivering on the average in 24 h.
Europe: delivering on the average in 2/3 weekdays.
Other countries: delivering on the average in 5 weekdays; custom duties charged to the buyer.
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Of course! Free insurance by Lloyd's London that covers almost all destinations.
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Antique barometers
Code 7849 Aneroid Barometer
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