细节
A 19th Centuary eight-day marine chronometer
the silvered dial signed and numbered Edwd Baker 1135, with Roman numerals, Arabic five-minute intermarkers 60-5-10 ?? ???? subsidiary seconds and up-and-down dials, blued steel hands, main frame assembly with chain guard carrying remainder of the going train, Earnshaw escapement with cylindrical heat compensation weights, blued steel helical balance spring, spring foot detent with jewelled locking stone, brass bowl, the bezel with convex glass, gimballed in plain three-tier mahogany box the middle section with inset bone ivory disc (unsigned), external brass drop handles -- dial diameter 4 1/8in. (10.4cm.) Box 7¼in. (18.5cm.)
See illustration