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<p>A rev counter is a mechanical device driven by a cable from the
block. A tachometer is an electronic device driven by electrical
pulses from the coil. They are completely different.</p>
<p>PaulH.<br>
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<div class="moz-cite-prefix">On 01/08/2023 19:10, Eric Russell
wrote:<br>
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<div class="gmail_default" style="font-size:large">I believe a
tach (short for tachometer) and rev counter refer to the same
instrument. </div>
<div class="gmail_default" style="font-size:large"><br>
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<div class="gmail_default" style="font-size:large">And, yes, all
MGAs came with a tach as original equipment.</div>
<div class="gmail_default" style="font-size:large"><br>
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<div class="gmail_default" style="font-size:large">EjR <br>
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