An early Victorian Fox's Balance by William Wilton

An early Victorian Fox's Balance by William Wilton, Cornwall, brass and silvered with marked scale either side, with curved brass plaque inscribed FOX's Balance by Wilton, ST DAY Cornwall, fitted in a mahogany case with a rising glazed from the base with a drawer, with printed trade label to reverse W.WILTON, MATHEMATICAL Philosophical & Optical Instrument Maker, ST DAY CORNWALL..., with ivory handles, the reverse with a brass needle and ivory scale marked 30-0-30, 12in (30.5cm) h. Robert Were Fox (26 April 1789 - 25 July 1877) Fellow of the Royal Society was a British geologist, natural philosopher and inventor. He is known mainly for his work on the temperature of the earth and his construction of a compass to measure magnetic dip at sea.