गाड़ियों में दूरी मापने के लिए लगा यंत्र कहलाता है *
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metre
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Explanation:
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.
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