TWO GILT BRASS ANEROID POCKET BAROMETERS WITH ALTIMETERSWATSON BROTHERS, LONDON AND UNSIGNED, LATE 19th CENTURYBoth with 1.75 inch circular registers, the first with subsidiary dial Fah't scale thermometer to centre inscribed PATENT 7318 beneath Improved Scale,pensated, R'D N. 213776, Watson Bro's, 31 COCKSPUR St, LONDON within concentric scale calibrated for barometric inches and outer rotating altimeter scale annotated 0 to 10000 feet divided for every fifty feet; the second with conforming barometer scale and 0 to 8000 foot altimeter scale, each in a frosted gilt finish pocket watch type case with spension loop, (2).Each approximately 5cm (2ins) diameter, the Watson 1.5cm (0.675ins) deep; the other 1.2cm (0.5ins) deep.Provenance: The archive collection of Barometer World Meum, Merton, Devon.Watson Brothers of 31 Cockspur Street were retailers of clocks, watches jewellery, silver and objects who took-on the premises of Phillips Brothers after 1855.