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Barometer (detail)

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made in Edinburgh

Barometer (detail)
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This is a detail of a pocket-sized special barometer without mercury, also known as a sympiesometer. The barometer was made around 1850, probably by Alexander Adie & Son of Edinburgh. It was retailed in London by Adie's youngest son Patrick.

The detail shows the barometer's oil tube, movable pointer, and silvered plate. The plate is inscribed 'PATENT / Adie & Son / EDINBURGH / No 3262', and in the lower left corner 'ADIE / STRAND/ LONDON'.

Alexander Adie patented his design of the mercury-free barometer in 1818. The inscription appears to show that the Edinburgh firm made the instrument and supplied the London business with the item, ready for sale.

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