Hah! or not Hah!, that is the question.

I may or may not have found a way to consistently and quickly measure both the diameter of hand-spun yarns and their thickness variance. With no highly specialised tools for textile analysis.

Actually, with very few tools at all.

I will know whether I can go "Hah!" in joy about that once I have bent my mind around the working functions of one or a few picture analysis programmes... and then I'll tell you all about it.