Antique Halstaff & Hannaford  Barometer. I would assume late Victorian. It measures 20cm H x 17cm W x 11.5cm D (base plate). It weighs 1.3Kg. It reads "Hannaford & Halstaff 228 Regent Street".  The barometer works, i.e. it passes the 'plastic bag' test. The setting hand is a little bent. The bezel rotates. The case could do with a minor clean.