A fine quality two-draw monocular by George Adams Junior, Optician to his Majesty King George III. The gilt brass is in excellent condition, with no signs of wear. The signature is typical of the period. The ivory is in perfect condition, with the exception of the objective lens mount, which suffers fron a shrinkage crack. This is shown clearly in the photos. Lenses are in perfect condition. The wooden case is covered with red Morocco leather. The leather is worn, with scratched and losses (again, see photos).
This monocular dates from around 1790 (not later than 1795). In the Adams’ catalogues, these instruments are described as Opera Glasses. Binocular opera glasses became popular in the 19th century.
Ask the Dealer
Ganymede Antiques, established in 1992, is based in Muswell Hill, London, U.K. We specialise in scientific instruments from the 18th and early 19th centuries, with particular interest in sundials, and drawing and calculating instruments. We are always keen to buy interesting instruments, and entire collections. We exhibit at the twice yearly International Antique Scientific Instrument Fair in London. Keith Petts can be contacted at email@example.com