Electrical machinery. The rotor and the stator to a generator for Vargöns power plant. During the building of Asea's workshop. The outer diameter of 11.4 m.

The Machines Age from Tekniska museet. The Swedish National Museum of Science and Technology (Swedish: Tekniska museet) is a Swedish museum in Stockholm. It is Sweden’s largest museum of technology, and has a national charter to be responsible for preserving the Swedish cultural heritage related to technological and industrial history. Its galleries comprise around 10,000 square meters, and the museum attracts annually about 350, 000 visitors. The collections consist of more than 50,000 objects and artifacts, 600 shelf metres of archival records and documents, 200,000 drawings, 620,000 images and just over 50,000 books. The National Museum of Science and Technology also documents technologies, processes, stories and memoirs in order to preserve them for generations to come.