220 219 221. A 7½IN. RADIUS VERNIER SEXTANT, CORNHILL, LONDON 219 (detail) 219.


A FINE 17½IN. RADIUS VERNIER MAHOGANY OCTANT BY BENJAMIN COLE, LONDON, 1759


signed on the cross bar Benjamin Cole 136 Fleet St. London / iann Crick 1759, the ivory arc divided 0-90º in both directions, wooden index arm with friction vernier divided 10º-0º-10º, pinhole sights, interchangeable shades and inset note plate behind -- 19¾in. (50cm.) high


Benjamin Cole II (1737-1813) was apprenticed to his father, also Benjamin, and sold from these premises for most of his career. A Cole quadrant typically cost between 18s to 25s.


£1800-2500 220.


AN 8IN. RADIUS VERNIER SEXTANT BY HENRY HUGHES & SON LTD, LONDON


with oxidised-brass triangle-pattern frame, signed as per title and numbered ‘5970’, silvered scale divided to 155º, hinged vernier magnifier platform, sighting telescopes with cross-hairs, mirrors and shades, contained within fitted box with accessories and test certificate for 1907 -- 13in. (33cm.) wide; together with a 19th Century counter-weighted stand stamped ‘H.O. 4’ for the Hydrographic Office and contained in box of issue -- 14½in. (37cm.) wide


(2) £800-1200


221 222 73


222. A 19TH-CENTURY ARTIFICIAL HORIZON


with cast-iron basin, glazed brass tent, mercury bottle, stopper and funnel contained within fitted mahogany box -- 7½in. (19cm.) wide


£100-150


with oxidised-brass triangle-pattern frame, silvered scale divided to 150º, telescopes, mirrors, shades and fruitwood handle, contained in a fitted box with accessories, named on tied label for Charles Leigh de Hauteville, DSC, RD, RNR -- 11in. (28cm.) diameter


£300-400


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