Two-day Marine Chronometer with winding. Robert Watshaw, circa 1880.

Two-day Marine Chronometer with winding. Robert Watshaw, circa 1880. Robert Watshaw, 178 Park Lane, No. 600, circa 1880. Fine mahogany two-day Marine Chronometer with winding. C. Brass bowl with threaded glazed bezel gimbaled in three-body mahogany box with glazed panel in the top under hinged lid with fitted catch, brass inlaid corners and side strips, brass handles, key-lock in front, gimbal ring locked by swiveling arm pressing sideways against the base of the cylinder. D. Silvered, Roman hour numerals, outer minute ring, Arabic seconds on subsidiary dial at 6 o'clock, up/down indicator at 12 o'clock. Gold "Spade" hands. M. 81 mm., brass full plate with recess for the mainspring barrel, spotted decoration, cylindrical pillars, secured by screws, 13 jewels, fusee and chain, Earnshaw spring detent escapement, cut bimetallic compensation balance with free-sprung helical balance spring with terminal curves, two cylindrical temperature-adjustment weights, two mean time adjustment nuts. Signed on the dial and movement. Dim. 18 x 18 x 18 cm.