A Boucher's Patent Calculating Circle, early 20th century,

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Sold Date 2026 full date locked

Source BONHAMS AUCTIONEERS & VALUERS, London, Knightsbridge

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Description

A BOUCHER'S PATENT CALCULATING CIRCLE, EARLY 20TH CENTURY, silvered dial engraved Boucher's Patent Calculating Circle Made in France Manlove, Alliott, Freyer & Co Nottingham & Rouen, in ebonised wood frame with two external operating knobs, 5 1/2in (14cm) diameter ; together with a Neuhofer & Sohn circular slide rule, after...

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