An oxidised and lacquered brass bell shaped "HEZZANITH sextant, the arc with inset silvered scale signed Heath & CO Ltd Crayford London and W.I.Farquharson R.N., the index arm with vernier scale, tangent screw and clamp, with magnifier on swing arm, seven shades and mirrors, with accessories in fitted case - 10¾in.(27.5cm) wide