ScientificAmerican1902-10-11.jpg Scientific American 1902-10-04ThumbnailsScientific American 1902-10-18Scientific American 1902-10-04ThumbnailsScientific American 1902-10-18Scientific American 1902-10-04ThumbnailsScientific American 1902-10-18Scientific American 1902-10-04ThumbnailsScientific American 1902-10-18Scientific American 1902-10-04ThumbnailsScientific American 1902-10-18

General view of the Faller automatic telephone exchange. Rotary contact maker. Shuttles, showing several lifted into talking position. The "busy-wheel".



Source: Steve Kirch, creator of a wonderful website about SCIENTIFIC AMERICAN in the past

Restoration by: magscanner