WILLIAM WILTON, CIRCA 1835

细节

A CORNISH DIP CIRCLE
WILLIAM WILTON, CIRCA 1835
the lacquered brass Fox-type dip circle signed on graduated base W. Wilton ST DAY Cornwall, the dipping needle in chamber with hinged glass window, silvered dial 90°-0°-90°-0°, mercury thermometer with ivory centigrade and fahrenheit scales, bubble level and three screw feet -- with an autograph manuscript signed 'R.W. Fox' in pen, 5 pages describing the use of his new dipping needle in Ireland, dated 17 Ocotber 1835
8in. (20cm.) high

注意事项

Prospective purchasers are advised that several countries prohibit the importation of property containing materials from endangered species, including but not limited to coral, ivory and tortoiseshell. Accordingly, prospective purchasers should familiarize themselves with relevant customs regulations prior to bidding if they intend to import this lot into another country.

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拍品专文

The dip circle invented by Robert Were Fox (1789-1877) was a favourite of the British Royal Naval Polar Expeditions. The magnetician Sabine on the Erebus and Terror with Captain James Clark Ross in 1840-1 called to attention "all who take interest in the results of researches, to the invaluable aid for which magnetical science is indebted to Mr. Ross".