FOr any form of plans
You can also use the Helpers Lines who give middle or some other fractionnal points! ;)

Thank you Michael.

I learned some Nurbs modeling using AmapiPro. In Amapi you select the object hold down the shift key (as I remember) drag over other object and it snaps accordingly to preset snaps like center. Your way works fine for me too.

Thanks!

Great app and tremendous customer service.

Mike