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Lot 64

A Benjamin Martin brass circumferentor,
English, Third quarter of the 18th century,

18 May 2016, 13:00 BST
London, Knightsbridge

£800 - £1,200

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A Benjamin Martin brass circumferentor, English, Third quarter of the 18th century,

the silvered brass compass rose engraved with circle degrees and four quadrants inset with two bubble levels set at right angles, flanked by two-folding sights on alidade moving over circular wheel with engraved circle of degrees, 12 ins (30.5cm)

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