Aneroid Barometer. 8 inch diameter brass-cased, with twin thermometers.

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Reference
6226
Diameter:
8.00 cm (3 1/4")
Fine and unusually large 19th Century 8-inch [210 mm] diameter brass-cased aneroid barometer. The well-engraved silvered brass dial with exposed movement and bearing twin curved thermometers - alcohol Réaumur and Centigrade, and mercury Fahrenheit, protected by bevelled plate glass. The case profile exaggeratedly dished.
Diameter:
8.00 cm (3 1/4")
More Information
Year 1870