One thing I learned as a kid, to adjust the points all you need is a matchbook cover. Someone I knew who worked for International Paper showed me that trick, they’re exactly .017 thousandths of an inch thick.
A standard business card also works. I use them to set the gap on small engine coils.
my old man never tought me that trick, made me use the gaper on the points and the plugs. damn new cars you cant even change the oil...