I am not going to search this site it this is already posted. Anyway you can use this to make your own tube coping templates. When you get to the page select tube notcher. It is set up in metric but that should be no big deal with a caliper. Fill out settings and print you own paper template.
http://www.cycle-frames.com/bicycle-fra ... tcher.html
http://www.cycle-frames.com/bicycle-fra ... tcher.html