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Barometer

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Postcard of Barometer.
000-100-102-661-C
© National Museums Scotland

Barometer

This simple mercury barometer was made around 1900 and retailed by Baird & Tatlock of Edinburgh. The rule is signed 'J. RABONE & SONS/ BIRMINGHAM'.

The pressure of the mercury in the instrument's cistern supports the column of mercury in the tube with a vacuum above it. As the atmospheric pressure changes, so does the height of the column.

The instrument may, therefore, be used to forecast changes in the weather, which is dependent on atmospheric pressure, or to determine the heights of mountains or the depths of mines.


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Online ID: 000-100-102-661-C
Image Rights Holder: National Museums Scotland
Project: 0098: National Museums Scotland
Project description | View all records in project
Ref: National Museums Scotland  T.1902.17
Date: Around 1900
c. 1900
Material: Mercury; wooden scale
Dimensions:
What: Barometer, mercurial, simple
Subject: 10. METEOROLOGY (Departmental Classification)
Who: Baird and Tatlock, Edinburgh (Maker)
Where: Scotland, Midlothian, Edinburgh
Event:
Description: Simple mercurial barometer with adjustable wooden scale, the ru le is signed 'J. RABONE & SONS / BIRMINGHAM', retailed by Baird & Tatlock of Edinburgh, c. 1900
References:
  • For Baird & Tatlock, see Clarke, T.N., Morrison-Low, A.D. & Simpson, A.D.C., Brass & glass scientific instrument making workshops in Scotland as illustrated by instruments from the Arthur Frank Collection at the Royal Museum of Scotland. Edinburgh: NMS, 1 
  • For the barometer, see Middleton, W. E. K., The History of the Barometer. Baltimore, Maryland: 1964 
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