SIGNED SPENCER, BARRETT & CO. LONDON,
Details
A 19TH-CENTURY EBONY AND BRASS MOUNTED OCTANT,
signed Spencer, Barrett & Co. London,
with pin-hole sight shades and mirrors, the frame with pencil socket, ivory scale, the brass index arm with vernier, tangent-screw adjustment and clamp --13in. radius
signed Spencer, Barrett & Co. London,
with pin-hole sight shades and mirrors, the frame with pencil socket, ivory scale, the brass index arm with vernier, tangent-screw adjustment and clamp --13in. radius