拍品專文
This chronometer is circa 1854.
細節
A TWO-DAY MARINE CHRONOMETER
John Poole, No. 1749
the silvered dial signed and numbered John Poole MAKER TO THE ADMIRALTY, LONDON No. 1749, Roman hour numerals, gold hour and minute hands, subsidiary seconds and up-and-down dials with blued steel hands, small size movement, Earnshaw escapement, cut bimetallic balance with Poole auxiliary, circular heat compensation weights, blued steel helical balance spring, dovetail spring detent to side of banking block, jewelled locking stone, brass bowl numbered 1749, gimballed in three-tier brass-bound mahogany box with square bone ivory inset to bottom section, external brass drop handles
86mm. dial diam., 160mm. sq. box
John Poole, No. 1749
the silvered dial signed and numbered John Poole MAKER TO THE ADMIRALTY, LONDON No. 1749, Roman hour numerals, gold hour and minute hands, subsidiary seconds and up-and-down dials with blued steel hands, small size movement, Earnshaw escapement, cut bimetallic balance with Poole auxiliary, circular heat compensation weights, blued steel helical balance spring, dovetail spring detent to side of banking block, jewelled locking stone, brass bowl numbered 1749, gimballed in three-tier brass-bound mahogany box with square bone ivory inset to bottom section, external brass drop handles
86mm. dial diam., 160mm. sq. box