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A late 18th/early 19th-Century English lacquered-brass pantograph
细节
A late 18th/early 19th-Century English lacquered-brass pantograph
signed Troughton London, with six ivory wheels, two arms with scales and sliding pen/pointer holders with screw clamps, brass pointer and felt-covered counterweight, in the original shaped and fitted mahogany case
27½in. (69.8cm.) wide
signed Troughton London, with six ivory wheels, two arms with scales and sliding pen/pointer holders with screw clamps, brass pointer and felt-covered counterweight, in the original shaped and fitted mahogany case
27½in. (69.8cm.) wide