travel : LondonRome2012 : Organized : Museums : BritishMuseum : London-British Museum-Gold Pocket Chronometre63

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London-British Museum-Gold Mounts88

London-British Museum-Gold Pocket Tourbillon Chronometre64

1800 Thomas Earnshaw was a pioneer in marine timekeeping. This pocket chronometre has a plain steel balance and bimetalic 'sugar tongs' to compensate for changing temperatures. The watch was owned by Charles George Perceval, 2nd Baron Arden, Lord of the Admiralty. Thomas Earnshaw, London Fusee, spring detent escapement ,balance with spring, temperature compensation (P&E CAI-1731)
aperture=f4.5 focal length: 60.0 mm exposure 1/200 sec ISO: 3200

London-British Museum-Gold Mounts88

London-British Museum-Gold Pocket Tourbillon Chronometre64
Created with the tool album a script written by Dave Wed Dec 21 21:19:55 2016