Gold plating is often used in electronics, to provide a corrosion-resistant electrically conductive layer on copper, typically in electrical connectors and printed circuit boards.
Each is constructed differently and the components are made from gilding metals and red brass alloys with some gold plating, enamel, and bronze pieces.
He has been credited with developing the gold-over-metal method of manufacturing called bi-metal (also incorrectly known as gold plating) which proved successful.