Y A FINE EARLY VICTORIAN MAHOGANY BOWFRONTED MERCURY STICK BAROMETER

Y A FINE EARLY VICTORIAN MAHOGANY BOWFRONTED MERCURY STICK BAROMETERA. Abraham, Liverpool, mid 19th centuryWith concave-sided upstand and cavetto cornice over rectangular bow-glazed silvered double Vernier scale flanking the large-bore tube each calibrated in barometric inches with the usual observations beneath inscription Yesterday, Noon to upper left opposing signature A. Abraham, Liverpool to upper right, the ebony line-edged trunk of the same bowed profile incorporating twin Vernier setting squares to throat over applied glazed mercury tube Fahrenheit and Reaumur scale thermometer with ogee moulded crests to the upper and lower rails, the base with turned half vase cistern cover flanked by ebony diamond lozenge line strung canted angles over cavetto moulded underside incorporating level adjustment screw.94.5cm (37.25ins) high. Abraham Abraham (and Company) are recorded in Banfield, Edwin BAROMETER MAKERS AND RETAILERS 1660-1900 as working from several addresses in Liverpool 1817-75. Banfield describes them as 'important makers' who exhibited at the Great Exhibition at the Crystal Palace in 1851.The current lot is provided with two scales to allow change in barometric pressure to be recorded as designed by Admiral Fitzroy for his 'storm barometers' which he devised in around 1857. Condition Report: The tube is filled, the column will rise when the instrument is tilted but stops just short of the top of the tube indicating that there is a small amount of air present. The silvering to the scales has oxidised hence now have a mellow pewter-like tone otherwise they are in fine original condition with both Vernier slides in working order. The thermometer also has some even overall mellowing/discolouration to the silvering otherwise is in fine original condition. The case is missing three very short runs of mouldings around the top edge of the base moulding to the left just beneath the cistern cover; the cistern also cover has a small hairline crack otherwise case is in fine condition. Condition Report Disclaimer