Marine chronometer by Brockbanks

Marine chronometer by Brockbanks, London, c. 1802. Gimballed mahogany box, white enamel dial with gold hands, signed on the dial 'Brockbanks London'. Movement with spring detent escapement, the passing-spring of which is planted separately from the detent, a three-arm compensation balance with stops to limit the movement of the arms, and a special arrangement to prevent over-banking. Movement contained within brass cannister, signed on the base, 'Brockbanks, London, No. 568'. Presented to the museum of the Worshipful Company of Clockmakers by Samuel Elliott Atkins in 1896. Clockmakers' Museum No. 615.