Step by step guide on how an automotive odometer works, this information pertains
to all motor vehicles.
Step 1 - A vehicle's odometer is a measuring device
used to inform the driver on the number of miles a particular vehicle has been driving,
this meter is directly related to the speedometer.
A trained technician can give an informative evaluation of the car.
The odometer has invented around 27 BC. by Vitruvius, a Roman writer and architect.
This first odometer was a chariot wheel four feet in diameter, turning 400 times
for one Roman mile using a 400 tooth cogwheel that turned once each mile. This cogwheel
engaged another wheel that dropped pebbles one by one into a box. The distance traveled
would be measured by counting the pebbles at the end of the trip. Odometers have
also been used by the ancient Chinese, Alexander the Great and even Benjamin Franklin.
Modern inventors like William Clayton created modern-day odometers that used separate
gears which control each digit.