A late 19th century marine chronometer, the two-day fusee movement with Earnshaw type spring detent and bimetallic balance, the silvered circular dial with Roman hour numerals, subsidiary state of wind and seconds dials, inscribed 'D. McGregor & Co makers to the Admiralty, Glasgow & Greenock' and numbered '2021', in a brass bowl hung in gimbals, within a brass bound rosewood three-section case, the front with applied makers' plaque, total height 18.8cm.