SIGNED JECKER PARIS,
Details
A 19TH CENTURY OCTANT,
signed Jecker Paris,
the frame with pin-hole sight, three shades, mirrors, the index arm with unusual magnifier for the vernier scale, with tangent-screw fine adjustment and clamp, (arc scale missing)--12½long
signed Jecker Paris,
the frame with pin-hole sight, three shades, mirrors, the index arm with unusual magnifier for the vernier scale, with tangent-screw fine adjustment and clamp, (arc scale missing)--12½long