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Pocket chronometer movement with dial and hands. Full-plate fusee movement, signed and numbered, with Arnold spring detent escapement and steel ‘OZ’ balance with helical spring.

The movement has a white enamel dial with Roman numerals and steel open-heart hands, with a subsidiary seconds dial below centre with a steel hand.

Object Details

ID: ZAA0310
Collection: Timekeeping
Type: Pocket chronometer movement
Display location: Not on display
Creator: John Arnold & Son
Date made: circa 1785
Credit: National Maritime Museum, Greenwich, London, Foulkes Collection
Measurements: Overall: 49 x 47 x 18 mm