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The tachometer measures the number of revolutions the engine makes in a minute. This indirectly equates to the speed of the vehicle.

Depending on the gear that the vehicle is in, you could determine speed with a tachometer. To determine your speed, you would need to know the gearing of the rear end as well as the circumference of the wheels.

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Q: How is tachometer related to speed of vehicle?
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tachometer.


Tachometer speedometer and trans shift indicator quit working 1995 Chevy truck?

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