Dwell Meter for 6V?

[dakotafarmboy]

Where can I buy a decent dwell meter for a 6 volt system?

A couple days back I promised I would check the dwell on my 53 that I have gapped at 0.016, but I don’t own a dwell meter. I had hoped my Fluke 115 Multimeter could do this but it does not have a duty cycle function (that I can find anyway).

So I am back to looking for an actual dwell meter. I saw a nice looking Sears Dwell meter on eBay, but then I saw it was only for a 12 volt system. So I assume that won’t work for me.