Question

what is a speedometer?

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Answer 1

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A speedometer or speed meter is a gauge that measures and displays the instantaneous speed of a vehicle. Now universally fitted to motor vehicles, they started to be available as options in the early 20th century, and as standard equipment from about 1910 onwards.

Answer 2

Answer:

Speedometer,instrument that indicates the speed of a vehicle,usual combined with a device known as an odometer that records the distance travelled.