by **Guest** » Thu Jan 10, 2008 3:22 am

The diameter of the circumscribed circle is the diagonal of the square 0.025^sqrt(2).

The circumerence of circle is c = pi*d, where d is the diameter given by above.

Not sure my response got merged into your post.

If you are wirewrapping 0.025 wirewrap posts, the length of a turn will be somewhere between the two as the wire is deformed. It does not perfectly surround the post, nor is it the circumscribed circle.