Actually...one of the advantages of the involute tooth form is that it gives uniform rotary motion. There is the the question, of course, of "accurate tooth form," but if you're worrying about that level of precision, you can worry about the accuracy of the tooth form as well as anything else.
Try to make a living, not a killing. -- Utah Phillips
Don't believe everything you know. -- Bumper sticker
Everybody is ignorant, only on different subjects. -- Will Rogers
Law of Logical Argument - Anything is possible if you don't know what you are talking about.