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A rare George Adams Henley's Electronometer, English, circa 1775, image 1
A rare George Adams Henley's Electronometer, English, circa 1775, image 2
Lot 62

A rare George Adams Henley's Electronometer,
English, circa 1775,

31 October 2017, 13:00 GMT
London, Knightsbridge

Sold for £2,500 inc. premium

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A rare George Adams Henley's Electronometer, English, circa 1775,

stamped G *Adams* London, the turned boxwood column and stand with light wood index arm moving over 180 degree scale, 8 1/4in (21cm) high

Footnotes

William Henley invented this design of electrometer in 1770.

See George Adams, An Essay on Electricity London 1787, Plate II, Fig. 6 for illustration of identical instrument.

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