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A relatively small English marine chronometer in a three-tier, brass-bound mahogany case, made c. 1860. The lower part of the three-tier case has two drop handles at the sides, while the front has a lock and key. In the front side of the upper part is a bone plaque. The movement is placed in a gimballed brass bowl, which can be secured for transport purposes. The silvered dial is protected by a flat glass set in a bezel, screwed to the bowl.
The maker has signed and numbered the chronometer on both the silvered dial and the backplate in the following manner: French Royal Exchange LONDON No 8085
The time is indicated by two golden hands on the silvered dial with a Roman chaptering with five-minute and minute divisions. The seconds are indicated by a blued-steel hand on a separate chapter ring with Arabic ten-second, five-second and second divisions. Near the XII there is up-and-down dial 0 - 56 (hours).
The two-day duration movement is constructed between two circular plates and is driven by a spring in a spring barrel via a chain fusee. It has a so-called Earnshaw spring detent escapement with a compensated balance and helical spring. The chronometer is wound by a special fixed winged knob on the rear side of the bowl with a ratchet to prevent winding the clock in the wrong direction.
The chronometer is in good condition .
Literature: Tony Mercer, Chronometer Makers of the World, p. 143
Price:
4250 GBP
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