ScientificAmerican1880-10-30.jpg Scientific American 1880-10-23ThumbnailsScientific American 1880-11-06Scientific American 1880-10-23ThumbnailsScientific American 1880-11-06Scientific American 1880-10-23ThumbnailsScientific American 1880-11-06Scientific American 1880-10-23ThumbnailsScientific American 1880-11-06Scientific American 1880-10-23ThumbnailsScientific American 1880-11-06

Recording galvanometer, designed for use in making measurements of transient currents. Also, Andrews' leveling attachment for earth cars: grading equipment used for leveling the earth dumped from transport cars in railroad construction.



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

Restoration by: magscanner