I'm stickin' up for Mom...us old farts don't really care about all this modern stuff. We prefer simple things like what we always knew. It was good enough to build the world the youngins' live in.
But who needs a timing light for a stovebolt anyway? Tune' em by ear. I do and it runs perfect. Haven't had my light or dwell meter out for so long I'm not sure where they are.