AN EDWARDIAN MAHOGANY CASED BAROGRAPH BY NEGRETTI & ZAMBRA, TOGTHER WITH TWO DESK BAROMETERS (3)

Early 20th Century
The barograph in glazed wooden case, the base plate with maker's name inscribed, 41.5cm wide; the first barometer in dual gilt-metal case with a timepiece, 16cm wide; the second in Art Deco style 23cm wide