Early Barometer by Negretti & Zambra No 711 c1865
Negretti & Zambra barometer with finely struck and silvered 4¼” brass dial, having a range of 27–32 inches of mercury numerically divided to 1/10ths”. The upper portion marked “Stormy,” “Rain,” “Change,” “Fair” & “Very Dry,” and signed by the maker “Negretti & Zambra,” “London.” The lower portion having semi-circular mercurial thermometer calibrated 10–130 degrees Fahrenheit, and marked “Inst. Makers To Her Majesty,” and no. “711.”
Fine blued-steel pointer, set beneath bevelled glass with centre-mounted gilt brass index. Conventional single 2½” capsule-driven, first quality movement constructed in brass and set on a steel chassis. “C” spring and bi-metallic compensation. Contained within a formed and spun case having top-mounted suspension ring and pillar, engraved to the base of the suspension ring “James Thomas Edge from Arthur Kekewich, Oct 3rd 1866,” the verso with compensation port set at 3 o’clock.
The case retaining a good proportion of its original lacquered finish, some areas of oxidation and wear, original patination. The dial with some slight discolouration, the movement sensitive with good progression. Serviced, calibrated and conserved.
Well within the first thousand aneroid barometers constructed by this world-renowned London maker, this Negretti & Zambra barometer is a rare instrument with wonderful aesthetics and functionality, and must be regarded as of great historical importance. A fine collector’s piece.
Sir Arthur Kekewich was a preeminent British Chancery Division judge and later Privy Councillor. James Thomas Edge, a High Sheriff of Nottinghamshire, was Kekewich’s brother-in-law, married to his sister, Julia Frances Kekewich.
Dimensions: 4¾” diameter x 2¼” deep
Stock No: BA0352
Price: Vavasseur Archive
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