Tegger's FAQs has references to dwell meters - e.g for testing the coil. I
have never heard of a dwell meter before and they aren't widely available
from what I can tell..

Wondering if my digital electric multimeter can do this diagnostic...?
Starting Problems
.... is this: Connect a dwell meter to the negative coil terminal and to
ground.
Crank the engine: No dwell, bad igniter; Dwell but no spark, bad coil. ...
www.tegger.com/hondafaq/startproblems.html