On this day in 1904 Wilson E. Porter was granted the patent for Pedometer. U.S. Patent No. 765,992.

This invention relates to pedometers or devices for registering the distance traveled by a pedestrian carrying the same and has for its object the production of a novel, simple, and efficient construction embodying the various improvements and combinations of parts set forth hereinafter. 

Patent-Illustration-Pedometer_Page_1 Patent-Illustration-Pedometer_Page_2