Poole for John Clark Greenock, a mahogany cased two-day chronometer, the full-plate, chain-fusee movement having maintaining power, an Earnshaw escapement with the cut bimetallic compensated balance having wedge shaped weights, 10-turn blued-steel helical balance spring, engraved to the backplate 'Poole, London, 856', the four-inch silvered dial engraved with black Roman numerals, signed 'Jno. Clark, Greenock, 856', with gold spade hands, the subsidiary seconds dial and 54 hour 'up-and-down' dial with blued steel hands, the frame stamped 'U RT', with brass bowl and gimbal contained in a brass-bound three-tier mahogany case with brass drop handles, diameter 16.5 x 16.5 x 17.5cm the serial number on this movement would suggest a date of manufacture of circa 1839. *John Clark (& Son) are recorded as working as a chronometer maker at White Hart Buildings hart BuildingsHin the port of Greenock, near Glasgow from circa 1822 until 1872. It is known that he used movements with Poole's compensation.
Poole for John Clark Greenock, a mahogany cased two-day chronometer, the full-plate, chain-fusee movement having maintaining power, an Earnshaw escapement with the cut bimetallic compensated balance having wedge shaped weights, 10-turn blued-steel helical balance spring, engraved to the backplate 'Poole, London, 856', the four-inch silvered dial engraved with black Roman numerals, signed 'Jno. Clark, Greenock, 856', with gold spade hands, the subsidiary seconds dial and 54 hour 'up-and-down' dial with blued steel hands, the frame stamped 'U RT', with brass bowl and gimbal contained in a brass-bound three-tier mahogany case with brass drop handles, diameter 16.5 x 16.5 x 17.5cm the serial number on this movement would suggest a date of manufacture of circa 1839. *John Clark (& Son) are recorded as working as a chronometer maker at White Hart Buildings hart BuildingsHin the port of Greenock, near Glasgow from circa 1822 until 1872. It is known that he used movements with Poole's compensation.
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