Double Frame Quintant Signed Troughton And Simms C 1850 Marine

Rare double-frame quintant signed Troughton & Simms, circa 1850Presented here is a superb double-frame quintant made by Troughton & Simms, the most renowned English scientific instrument makers of their time. An exceptional piece, engraved “Troughton & Simms, London,” it embodies the pinnacle of 19th-century nautical craftsmanship. Designed by Edward Troughton, this instrument has an arc of 140 degrees, technically classifying it as a quintant. Made from solid brass—a material prized for its strength and accuracy—it represents the evolution of maritime navigation instruments. Double-frame sextants (or quintants) were much rarer than single-frame models, due to their complex construction and high cost. Thus, they rarely appear on the market. Dating from the early to mid-19th century. Troughton & Simms: Masters of Scientific and Nautical Instruments Troughton & Simms was one of the most prestigious British firms specializing in scientific and nautical instruments in the 19th and early 20th centuries. The company was renowned for its precision engineering, particularly in the production of sextants, theodolites, telescopes, and surveying equipment.