Posted by Greg Bainbridge on July 19, 2011 at 14:31:14:
In Reply to: Machine Center To Back? posted by BillS on July 05, 2011 at 15:36:30:
Machine center to back is the mounting distance of your part + the length of whatever holders you are using.
The mounting distance is the pitch apex to crown given on the summary + the crown to mounting face.