A polished brass 'A' frame vernier octant, unsigned, ebony handle, inset silver scale divided 5o-0o-115o, index mirror (discoloured) with three coloured shades, the horizon mirror (discoloured) with three coloured shades, the index arm 19 cm radius, swivel magnifier above the vernier scale, in fitted fan-shaped mahogany carrying box with accessories, with trade label John Bruce & Sons, Marine Opticians, 60 South Castle Street, Liverpool Nautical Stationers