An early 19th Century vernier octant in ebony and brass by Spencer Browning & Co London, the inset ivory scale divided 2° - 0° - 105° and stamped SBR in the centre, the vernier divided 20° - 10° -0°, inlaid ivory to back of frame for notes, three brass pins for standing, five shades, two mirrors and pin hole sight, in fitted stepped keystone case woth original suppliers label for Gowland & Son, Liverpool -- 10½in. (27cm.) span