A 19th Century Pocket Barometer.
The barometer with a lanyard ring, above the rounded body, with a top bezel rotating to set altitude. The altitude ring surrounding the silvered dial, marked for the maker, 'CALLAGAHAN & CO, 23A NEW BOND STREET, LONDON W', and marked for weather indication 'RAIN CHANGE & FAIR'. The whole within the gilt brass body, and complete with the silk lined Morroco carrying case.
Height 3 1/4 inches, 7.5cm.
Width 2 1/2 inches, 6.5cm.
Depth 1 1/4 inches, 3cm.
Date circa 1870.
