A Victorian pocket altimeter barometer, dating from the last quarter of the 19th century. It would have been used by explorers, mountaineers, or travellers. Although there are no maker's marks, it was made in England, probably around 1880, by one of the best makers, such as Francis Barker. Francis Barker was a prolific maker of pocket barometers from the Victorian era through to the early 20th century. Almost all of Barker's barometers were supplied unsigned to the retail trade, with the retailer often adding their own details to the dial. The dial is calibrated from zero to 8000 feet, with additional 'Rain', 'Change', and 'Fair' markings. The barometer has a brass case, blued needle, rotating bezel, and an adjustment screw on the rear.
The barometer is in good condition and full working order, and passes the plastic bag pressure test. The brass case is in good condition, with some wear to the original lacquered finish. The bevelled glass is in good condition, with a couple of scatches. The dial and needle are in good condition.