I bought a felt tip marker and put six lines on the distributor housing in line with the spark plug towers- - - - -didn't need to go searching for a fancy antique tool! Of course, I could have also watched the points and the distributor cam and adjusted a set of valves every time the points opened.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!