Capillary barometer glass

When the atmospheric pressure is displayed, the results depend not only on atmospheric changes but also on the ambient temperature surrounding the instrument. The ambience influence must therefore be compensated for to arrive at accurate weather forecasts. This device patented in 1818 for the polar explorer Alexander Adie does so in an even for the layman comparatively understandable and straightforward way. Manufactured in Belgium, it impresses by its attractive design (glass capillary on a glass plate) and size. Ambitious in terms of measurement technology, it instantaneously arouses curiosity. You can use it simply as a temperature-indicating technical room decoration; however, you can also take it as an incentive to delve a little into the intricacies of pressure and humidity measurement with the help of the detailed description (in German).