This chronometer was made by of John Poole of 57 Fenchurch Street, London but was sold by the Sydney instrument maker Angelo Tornaghi. This was not an uncommon occurrence as many of the better known manufacturers supplied chronometers to nautical opticians like Tornaghi and F. Allerding (H9922) who adjusted and tested the chronometers before putting their own names on the instrument.
The case of this particular instrument has Tornaghi's label pasted into the lid on which states he is a 'Chronometer Maker' and his address is 312 George Street, Sydney. However the instrument number 3856 and the name of John Poole engraved on the dial suggests this was one of the last chronometers made by Poole before he committed suicide in 1867.
John Poole was one of London's best known chronometer makers and he had won prize medals at the 1855 Paris and 1862 London International Exhibitions. He also won a gold medal at the 1867 Paris International Exhibition.
Tony Mercer in his book 'Chronometer Makers of the World' suggests the last known number of a chronometer produced by John Poole was number 3970. After his suicide his company was taken over by his brother James who continued to produce chronometers engraved with his brother's name.
The early date of this instrument, coupled with the rarity of chronometers made by John Poole, increases the significance of this chronometer. Its relationship to Sydney's early instrument makers and astronomers also enhances its significance.
Geoff barker, Assistant Curator, Total Asset Management Project, March 2008
Mercer, Tony, 'Chronometer Makers of the World', N.A.G. Press and Tony Mercer, 1991
Davies, Alun, 'The Rise and decline of Chronometer Manufacturing', Antiquarian Horology, Number 3, Volume 12, 1980