Details
A late 18th-Century ebony and brass octant,
signed Bowie, North Shields, with bone/ivory scale, stamped with the Ramsden fouled anchor divided engine proof mark, the frame with three shades and mirrors, double pin-hole sight with shade, the index arm 13¾in. (34.9cm.) radius, with vernier, tangent-screw fine adjustment and clamp, the frame fitted with pencil with carved cap, with part trade label for James Pyott, 74 West India Road, in stepped pine keystone shaped case
See Illustration
signed Bowie, North Shields, with bone/ivory scale, stamped with the Ramsden fouled anchor divided engine proof mark, the frame with three shades and mirrors, double pin-hole sight with shade, the index arm 13¾in. (34.9cm.) radius, with vernier, tangent-screw fine adjustment and clamp, the frame fitted with pencil with carved cap, with part trade label for James Pyott, 74 West India Road, in stepped pine keystone shaped case
See Illustration