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An English mahogany eight-day table chronometer, signed and numbered on the silvered brass dial HARRIS Late HATTON & HARRIS LONDON 658, c. 1830. The concave sided mahogany case has a recessed panel and break-arch moulded bottom, raised on brass bracket feet and surmounted by a brass urn-shaped finial. The 13.5-cm engraved latched dial has Roman numerals and five-minute markings. Above the middle there is an up-and-down dial and below a seconds dial. The spring-driven chain-fusee movement of eight-day duration has a sub-frame with Earnshaw's detent escapement, bi-metallic compensated balance with helical spring, the whole set in a brass cylinder, at the back a shutter engraved 'Wind up to the left hand every week'. • Height: 33.5cm. • The maker, Clement Harris, was active as a chronometer maker, initially in partnership with James Hatton from 1816-24. He continued on his own after Hatton’s death, as is suggested by the present signature. He was established at 76 Cornhill London, EC. He died in 1642. • Literature: T. Mercer, Chronometers of the World, Malta, 1991, p. 157. 



The Horological Foundation Desk Diary Project.


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