Details
A late 19th-Century vernier octant (unsigned)
constructed in brass, the silvered scale divided 5°- 0°- 130°, vernier clamp and fine tangent screw adjustment, swivel magnifier, three horizon shades, three telescope, two mirrors and wooden handle in fitted box, the radius -- 8in. (20.3cm.); the box -- 10¾ x 10½in. (27.3 x 26.6cm.)
See illustration
constructed in brass, the silvered scale divided 5°- 0°- 130°, vernier clamp and fine tangent screw adjustment, swivel magnifier, three horizon shades, three telescope, two mirrors and wooden handle in fitted box, the radius -- 8in. (20.3cm.); the box -- 10¾ x 10½in. (27.3 x 26.6cm.)
See illustration