497. [Navigation]

Impressive ebony octant with index arm.

18th c

Ebony, ivory, brass and mirror, 49 x 42,5 cm, unsigned.

Octant possibly produced by T. Watson (1767), incl. a protractor up to 90º and ivory vernier. A luxurious instrument that easily costed a captain's month wage!

€ 500 / 800

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