ScientificAmerican1880-10-23.jpg Scientific American 1880-10-16ThumbnailsScientific American 1880-10-30Scientific American 1880-10-16ThumbnailsScientific American 1880-10-30Scientific American 1880-10-16ThumbnailsScientific American 1880-10-30Scientific American 1880-10-16ThumbnailsScientific American 1880-10-30Scientific American 1880-10-16ThumbnailsScientific American 1880-10-30

Maxim's current regulator, used for controlling incandescent lamps in large arrays (and for which H. S. Maxim claims invention).



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

Restoration by: magscanner