How the repeatable jig works is you start at 0, stretch to your desire. Clamp on frame of call, remove latex/frame, there is a spring device in the cast that you push the stop back to zero, and tighten a set screw. At this point you lay out reeds, clamp in, release set screw and the spring pushed the tension to the previous place. As I say it's not the micro adjustments of the press, but it was also much less expensive of a start point.