This is a traditional mid-19th century-style bronze frame octant.
Occasionally an old instrument will be reconditioned and updated by someone who just can't part with his favorite piece. Here is such an instrument.
This is a traditional mid-19th century-style bronze frame octant. It has a silver inlaid bronze arc marked from zero to 120 degrees. The arc is hand-engraved T.W. Davies, Aberdeen. At some point in recent years, it was disassembled and overhauled. New index and horizon mirrors were installed. The magnifier for the arc was upgraded. A new 6 x 22 monocular was adapted to replace the old sighting tube. The frame was repainted to retard verdigris and corrosion. The mahogany case was refinished and relined. It came with a pill bottle holding a small polishing cloth and an adjustable wrench. A great old piece of navigation history which can still do the job. Fine for noon sights or as an instructional tool.
When I was a boy, these instruments were often referred to as "fisherman's octants." Back then you could still find them on occasion on the North Sea trawlers out of Scotland and Atlantic Canada.