digital tach

[0X01B8]

...highly recommend picking one up!  got one for around $50.  just clamps on any plug wire.  when adjusting mixture screws it was reading something like 940...946...951...960...955...948...944.  for a tuning amatuer like me the accuracy really helps understand the effects of everything I'm doing.  next best diagnostic tool in the garage next to the laser infrared thermometer.

-john