This is the Edison clock, designed by [David Krawczyk ... and correspond to hours and 5-minute increments. Insert two bulbs to set the alarm time, and make sure that the alarm knob points ...
On New Year's Eve, 1879, Thomas Edison unveiled his newest invention: the electric light. Reporters came from all over the U.S. to see Edison's Menlo Park lab lit up with his incandescent bulbs.
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