Ignition dwell and adjusting it.

A dwell meter is best. The spec is 28-32 degrees of dwell. Hook the meter up with black to ground and the red or green wire to the negative side of the coil.

I have a multimeter that I think has a dwell selection on it. Is that all that's necessary? I also have feeler gauges. I'll set it with those and then check it with a meter for the sake of learning how. If there is in fact a specific ignition dwell meter needed. Can I get a decent one at Oreillys or Autozone?