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Odometer Day

May 12

|Recurring Event (See all)

An event every year that begins at 00:00 on day 12 of May, repeating indefinitely

May 12
🌐 Everywhere
First occurrence:


Odometer Day celebrates the day in 1847 when William Clayton developed the “roadometer” to count the miles on a wagon.
The roadometer counted the revolutions of the wagon wheel and multiplying it by the circumference of the wheels, which resulted in a reasonable accurate count of distance measured.
This idea was not new, though.
The first documented maybe-odometer, documented by Plini and Strabo,  was used by the troops of Alexander the Great in circa 336-323 BC.
The first documented use of an actual odometer was described by Vitruvius around 27 -23 BC probably invented by Archimedes of Syracuse.


#OdometerDay #NationalOdometerDay



May 12
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