Individual difference in the shape of watch

First , I apologize for my poor English skills.
My Spitfire has a beautiful polished line on the edge of lug. But, there is a
difference in the thickness of the four lines.

How is your
watch?

A photograph may help us understand what you are trying to describe

Sorry...

I see no issue

Hello and welcome to the forum. I undestand your question - and I have an
answer. The fantastic reason that these polished bevelled edges on IWC's
pilots watches are not all exactly the same? Because the cases are hand
polished, not
done by robot or machine, so no two polishing jobs will look exectly the same.
This is most noticeabe on those polished bevelled edges on the lugs. Good
eye;)

Thank you both!

It was helpful