Ship's Two day marine chronometer by John Brunton, circa 1870 a ship's two day marine chronometer by John Brunton, maker to the Admiralty 17 upper East, Smithfield, London, number 590, circa 1870 a two day marine chronometer in a three tier brass bound mahogany box, gimble and key silvered dial with Roman numerals, up and down dial at 12 o'clock, subsidiary dial at 6 o'clock, gold hands, detent escapement, helical hair spring, fusee movement 18 cm high, 18 cm wide, 18 cm deep