Quote Originally Posted by polyglot View Post
Have a look at the timer in my signature (as posted by Larry above) and feel free to use the source as-is or modify it to suit yourself. It supports 1/100th stops because that was the simplest way of building in drydown correction with sufficient accuracy.
Thanks for the link to your timer. Very nice work and very generous making it open-source.

It seems that a minimum of 1/12 stop is the required and maybe even 1/20 stop. I'll start with 1/12 and see how it goes.

Thanks everyone for taking the time to reply.