Nautical Antiques | Ships Navigation | The Binnacle and Telegraph
A binnacle is a case or stand used for housing a ship’s compass or lamp. Navigational equipment was placed in the binnacle for easy and quick reference as well as protecting the more delicate instruments. Many early binnacles in the mid -18th century used Iron nails which were later discovered to cause magnetic deviations in the compass readings. As the development of the compass and understanding of magnetism progressed, greater attention was given to binnacle construction to avoid compass disturbances caused by iron.
In 1854, a new type of binnacle was patented by John Gray of Liverpool which directly incorporated adjustable correcting magnets on screws or rack and pinions. This was improved again when Lord Kelvin patented in the 1880s another system of compass and which incorporated two compensating spheres. These are colloquially known as "Kelvin's balls" in the UK, and "navigator's balls" in the United States.
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Old Portsmouth, PO1 2LU, Hampshire, UK.
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