A late George III/George IV mahogany cased pantograph by Troughton & Simms, London
All arms terminating in bone castors fitted with lead weight, brass armed pencil and brass headed pivot, two arms with scale and engraved 'B' and 'D', engraved with maker's name, 61cm long.
£400 - 500
US$ 600 - 750
470 - 580
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