細節
An early Victorian eight-day marine chronometer
John Carter No. 183; circa 1840
The silvered dial signed John Carter Tooley Street London No. 183, Roman hour numerals, gold hour and minute hands, subsidiary seconds dial with blued steel hand and up-and-down dial with gold hand, main-frame assembly carrying reversed fusee, barrel and centre wheel, the top-plate inscribed John Carter, Tooley Street, London No. 183, sub-frame assembly carrying the remainder of the train and Earnshaw escapement, blued steel and brass cut bimetallic balance with segmental heat compensation weights, blued steel helical balance spring, spring foot detent with jewelled locking stone, brass bowl and gimbal, three-tier brass bound mahogany box (with restorations), the centre with inset bone disc, external brass drop handles
107 mm. dial diam., box 188 mm. sq.