Shop guys just I was doing some experimental work in the shop. I was drawing some lines to measure the PAP. I was measuring the width from the gripping hole edges. I notice that if the track line is on the edge of the thumg the PAP is 6" over now if the track line is lets say a 1/4 off the finger hole the PAP seems to be 6" over 1/4 up.  check this out..


      \    O...O  1" of the the finger edge
                        \   +
                  \                      \ O     1/2 of the egde of thumb...PAP should read 5 1/2 over 1/2 up


but you still need to circle the hole ball to measure axis tilt.


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www.bowlritelanes.com
www.nextlevelproshop.com

The best and most accurate way to find your PAP is to roll a low flare (spare) ball on oily lanes and then trace the track with a marking pencil, then place the ball in a spinner to where when the ring that you drew does not wobble then place the marking pencil at the top of the ball and move it around until it goes from making a circle to a dot this is the exact location of PAP.

Some say that you can use a quarter scale and just measure 6.75" from the track at 90° to the track through grip center but this is only accurate if you have a 13.5" track diameter if your track diam. is say 12.5" then you would need to measure over 7.25" or if a 10" track you measure over 8.5" etc. Basically add 1/2 the difference between your track diam. and 13.5" to the 6.75"
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STORMIN1