Very rare 18th century ebony and ivory octant

Very rare 18th century ebony and ivory octant

sku: 67

Quick Overview

An 18th century ebony and ivory octant

Georges II period, ca. 1750

Very rare 18th century ebony and ivory octant

Georges II – Louis XV period, ca. 1750

Radius : 17,8 in

Octant ebony and ivory – Signed by the French dealer Decard Bordeaux, retaining the name of the manufacturer * GREGORY fecit *

Henry Gregory, optician and manufacturer of measuring instruments in London between 1744 and 1782.

Same octant is presented in the collections of the Independence Seaport Museum in Philadelphia – that belonged to John Barry, founder of the navy under George Washington.