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An image showing 'Marine Chronometer - Overall - Front'
An image showing 'Marine Chronometer - Overall 3/4'
An image showing 'Marine Chronometer - Overall - Back'
An image showing 'Marine Chronometer - View Through Mechanism - Left Side'
An image showing 'Marine Chronometer - View Through Mechanism - Right Side'
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Portable time keeper

Portable time keeper in carriage-clock style case. A piece of glass marked ZAA0010.1 and the key marked ZAA0010.2 can be viewed via the Whole/Part toggle. Timekeeper has an early form of chronometer escapement with pivoted detent fusee and maintaining power.
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Object Details

ID: ZAA0010
Collection: Timekeeping
Type: Portable time keeper
Display location: Not on display
Creator: Berthoud, Ferdinand; Abraham Louis Breguet & Fils
Date made: 1795
Exhibition: Time and Longitude
Credit: National Maritime Museum, Greenwich, London, Caird Collection
Measurements: Overall: 195 x 120 x 95 mm
Parts: Portable time keeper