Siemens

Founded in Berlin by Werner von Siemens and Johann Georg Halske to build pointer telegraphs; later everything from power stations to household appliances.

Werner von Siemens and Johann Georg Halske started the Telegraphen-Bauanstalt von Siemens & Halske in Berlin. In 1866 Werner von Siemens discovered the dynamo-electric principle, which made it possible to generate electricity on a large scale.

Siemens built telegraph lines, power stations, tramways and electrical appliances and became one of the world's largest industrial groups. Its household appliances were long made together with Bosch.

Siemens & Halske on older equipment; rating plate with model number.

• Technology and industrial design