Marine Chronometer Number 330 By James Hatton, 8 Days About 1805

James Hatton's marine chronometer number 330 has an 8-day walking time about 1805
Cardan joint suspension with a very rare shock absorber system. References: - "English Precision Pendulum Clocks" by Derek Roberts: "George Margetts describes himself as a maker of astronomical clocks and watches useful to the Science of Astronomy and the Art of Navigation. He resided at 21 King Street. He died in 1804, but his business was taken over by his former pupil James Hatton, with whom he partnered in 1800." Refer to the photograph of an eight-day chronometer made in 1800, number 203, signed "Margetts and Hatton," a photograph which shows the same key, of a very particular type. - Regarding the gimbal suspension with an extremely rare shock-absorbing system, the curator of clockwork mechanisms at the Royal Observatory Greenwich informed us that he was aware of only two other similar systems and wishes to include it in the forthcoming reference book that the observatory is to publish shortly. London, circa 1805.
The inscription on the box, E Sayers, likely refers to Edward Mawney Sayers (1818 – 7 December 1909), an Australian politician of English descent. Born in Essex, he emigrated to Van Diemen's Land in 1834. He later settled in Melbourne, where he married his first wife, Anna, in 1838; they had three children. On 4 March 1842, while working as a merchant, he was declared insolvent and left for Sydney. On 22 November 1844, he married Mary Ann Hayman; they had seven children. In Sydney, he acquired several coastal vessels and was a pioneer of the Sydney-Melbourne shipping route.