Details
An early 19th Century octant by Parnell
the ebony frame with brass index arm, pin hole sight, set of three interchangeable shades, mirrors, ivory makers plate signed Parnell Maker London, vernier with clamp and fine screw adjustment (with old damages), the radius -- 12in. (30.5cm.); associated key stone box with trade label for F.W. Lincoln, Boston -- 18in. (46cm.)
See illustration
the ebony frame with brass index arm, pin hole sight, set of three interchangeable shades, mirrors, ivory makers plate signed Parnell Maker London, vernier with clamp and fine screw adjustment (with old damages), the radius -- 12in. (30.5cm.); associated key stone box with trade label for F.W. Lincoln, Boston -- 18in. (46cm.)
See illustration