拍品 153
153
A late 18th-Century brass and ebony octant signed on the 15¾inch radius arm J.J.Hardy London, with framed vernier scale, with ivory plaque inscribed T.R.Hardenbergh 1806, the main arc with inset ivory scale divided 0°-95° with anchor mark, with double pin-hole sight and slide, back-sight, mirrors, on three turned brass feet, in fitted and shaped wooden case - 16¼in wide

細節
A late 18th-Century brass and ebony octant signed on the 15¾inch radius arm J.J.Hardy London, with framed vernier scale, with ivory plaque inscribed T.R.Hardenbergh 1806, the main arc with inset ivory scale divided 0°-95° with anchor mark, with double pin-hole sight and slide, back-sight, mirrors, on three turned brass feet, in fitted and shaped wooden case - 16¼in wide