A is an essential component found in every displays the of the vehicle while it is being driven. The device is connected directly to the transmission, which measures the rotation of the wheels and translates the data into the miles per hour (MPH) reading that appears on the

The speedometer has evolved over time and has gone through several technological advancements. The first speedometers were mechanical and consisted of rotating cables that were connected to the wheels. These early models were difficult to read, often inaccurately reported speeds, and were not very durable.

Later, in the 1930s, electric speedometers were introduced. These speedometers relied on electromagnetic waves to gauge motion and were more accurate compared to their ball-bearing and cable-driven predecessors. They were also more reliable, and drivers could now read their speeds with more confidence.

In the 1950s, the speedometer received another update with the advent of electronic sensing. These new models used a series of magnetic impulses generated by a magnet within the transmission to the speed of the vehicle. This technology allowed the speedometer to incorporate more features, such as trip meters and

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