Small 2-day box chronometer in lovely original condition, circa 1835.
Beautifully figured 3-piece mahogany box with brass-bound corners, the bowl, brass-edge and movement all bearing Pennington's number 263, with Pennington's fixed key numbered as the dial. Fullplate fusee movement retaining much of the original hand spotting (squiggling), the frame stamped JM. Earnshaw chronometer escapement, the spring-detent of typical Pennington 'dovetail' form. Compensation balance of standard Earnshaw pattern with wedge shaped weights, but with the addition of screws. 10-turn blued-steel helical balance-spring. Silvered dial with state-of-wind indication at 12, blued-steel hands. Box 16 cm square. Together with felt-lined mahogany outer transport box.
Maxwell McMaster & Son, Grafton St, Dublin, retailers of top London work, watches and chronometers.
Robert Pennington, together with his son Robert and other members of the family, were one of the leading chronometer makers of the first half of the 19th century. Having received little of the credit he is rightly due, Robert Pennington seems to have specialised in chronometer making after working for Thomas Mudge junior in the manufacture of Mudge-copy chronometers. Such was his skill that he and his son soon became suppliers to some of the very best retailers of the day: Barraud, Barwise, Ellicott and Arnold & Dent amongst many others. Inventor of the pre-drilled and tapped bimetallic balance taking mean-time and compensation screws, Pennington also designed a distinctive form of escapement, both detent and escape wheel. The fixed winding key, long associated with Barraud, is another of Pennington's original developments
The box professionally re-polished some years ago and with no real faults to speak of, the bowl and gimbals retaining most of their original lacquer. The dal in very good condition, with just a few minor age spots. The fine original detent was also fitted with a new locking stone some years ago. Outer guard box in good original condition, with old mended crack and a new leather carrying strap replacing the old and incomplete example as shown. Serviced and guaranteed. NB: This chronometer is in the United Kingdom and will need specialist shipping and handling. Please enquire as to likely costs.
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