Just an FYI Andy: You and others may already know this, but if you take 1" and divide it by the thread per inch, the result will be the amount of travel the nut will move in one full turn. Take a 3/8-24 thread for example: 1" divided by 24 TPI = .0416" Hope this helps with your fine tuning!! Bob Rapp Newport News, VA 70 Machine _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://www.amc-list.com/mailman/listinfo/amc-list