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SM BR2. ©Sir John Soane's Museum, London. Photo: Lewis Bush
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Thermometer in a mahogany case, made by Adams of Fleet Street, 1811

Mahogany with glass and engraved brass

Height: 10 in

Museum number: BR2

On display: North Drawing Room
All spaces are in No. 13 Lincoln's Inn Fields unless identified as in No. 12, Soane's first house. For tours https://www.soane.org/your-visit

Curatorial note

This thermometer was manufactured by Dudley Adams of 60 Fleet Street, London, 'Globe and Mathematical Instrument maker to the King'. The bill, dated 5 January 1811, in the Soane Archive [SM Archives: Papers connected with purchases / item 2], describes it as 'A Thermometer with Fahrenheit's & Reaumur's Scale in a mahogany frame. £1.16.0'. Interestingly the bill seems to be addressed to 'Mrs Soane'.

'Reaumur's scale' is a reference to the French Reaumur scale, also known as the "octogesimal division', a temperature scale in which the freezing and boiling points of water are set to 0 and 80 degrees respectively. It is named after the Frenchman René-Antoine Ferchault de Réaumur, who first proposed something similar in 1730.


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