Dated 1834-1837. From Scientific apparatus, musical instruments and telegraph equipment, [1834-1875].
A model designed to demonstrate the principles of the electro-magnet as developed by Michael Faraday (1791-1867), natural philosopher. Consists of a suspended brass frame with rotating fins in a mercury trough mounted on a wooden base. Possibly used by Wheatstone for teaching. [See K/PP107/5/103.]