Stephen Trapani wrote:
boater435 wrote:

Larry, Thank you for the info on the tiny tach. I am going to order
one. Do you know if the transducer size (1/4" or 6mm) is found by
measuring fuel line? Paul


I'm curious how it measures electronic pulses in a fuel line.

I assume it is mounted between the injection pump and an injector, and
thus it could sense the pressure pulses, or are they sound waves?