TWO DECORATIVE MERCURY STICK BAROMETERSBEARING SIGNATURES FOR I. BLATT, BRIGHTON, AND RIVA, SELBY, 20th CENTURYThe first mahogany with arched ivorine Vernier scale calibrated in barometric inches and with the ual observations beneath text I. BLATT, BRIGHTON opposing Fahrenheit scale spirit thermometer to the left hand side, the second yew wood with onion-shaped top over silvered scale inscribed RIVA, Selby to upper margin, each with visible tube to slender trunk over circular cistern cover to the rounded base, (2).The first 90cm (35.5ins) high, 9cm (3.3ins) wide; the second 93cm (36.5ins) high, 8cm (3.125ins) wide.Provenance: The retail stock of Barometer World Meum, Merton Devon.