Why is the Dwell meter used?

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Automobile Engineering Practice Test: Ignition System — practice the complete quiz, review flashcards, or try a random question.

An ignition system is a system in an internal-combustion engine that generates a spark to ignite the fuel-air mixture. It includes the battery, ignition coil, distributor, spark plugs, and associated switches and wiring.  The purpose of an ignition system is to generate a very high voltage from the car's 12-volt battery and send it to each spark plug in turn, igniting the fuel-air mixture in the engine's combustion chambers. The burning of this mixture in the cylinders produces the motive force.  There are three basic types of automotive ignition... Show more

Why is the Dwell meter used?