In addition to knowing the pin and CG/MB distance to the PAP (or the pin and PAP-pin-MB angle), you have to choose one additional value to complete the layout. Pin height above the midline, distance from VAL, anything.
If you choose to define the VAL (say you want the pin 2" from the VAL, I believe that's a part of the "TJ trick layout" or maybe the asymmetrical flip layout), you draw a line so that the pin is 2" from that line. Since the VAL is perpendicular to the midline through the PAP, that fixes the midline as well. You know the PAP coordinates as X" over by Y" up/down, that's measured from the center of grip, which is always on the midline. A particular PAP, VAL, midline, and the pin/CG/MB distance from PAP can only define one point as the grip center (well, maybe two, but only one will make sense).
SH
Edited on 7/5/2007 11:33 AM