細節
A small size one-day marine chronometer
The white enamel dial (50 mm. diam.) now signed THOS. EARNSHAW. LONDON CHRONOMETER INVT ET FECT NO 1510, Roman hour numerals, Arabic five minute intermarkers 60-5-10 et seque, (replacement) blued steel Breguet hour and minute hands, subsidiary seconds dial (at VI) with blued steel hand, gilt full-plate pinned movement, the barrel bridge now inscribed THOS EARNSHAW. Invt et Fecit, 119 High Holborn, LONDON 1510, Earnshaw escapement, later re-positioned spring detent with shortened locking jewel, cut bimetallic balance, segmental heat compensation weights, blued steel helical balance spring, brass bowl and gimbal, three-tier brass-bound mahogany box, the bottom section with bone ivory inset inscribed 1510, external brass drop handles, later winding key
50 mm. dial diam., 125 mm. sq. box
The white enamel dial (50 mm. diam.) now signed THOS. EARNSHAW. LONDON CHRONOMETER INVT ET FECT NO 1510, Roman hour numerals, Arabic five minute intermarkers 60-5-10 et seque, (replacement) blued steel Breguet hour and minute hands, subsidiary seconds dial (at VI) with blued steel hand, gilt full-plate pinned movement, the barrel bridge now inscribed THOS EARNSHAW. Invt et Fecit, 119 High Holborn, LONDON 1510, Earnshaw escapement, later re-positioned spring detent with shortened locking jewel, cut bimetallic balance, segmental heat compensation weights, blued steel helical balance spring, brass bowl and gimbal, three-tier brass-bound mahogany box, the bottom section with bone ivory inset inscribed 1510, external brass drop handles, later winding key
50 mm. dial diam., 125 mm. sq. box