What's The Ruling

[BC MIST]

That said , you say "Secondly, if my bag is 100 yards away and yours is near my ball, I can use one of your clubs, as long as it is the same length, to determine my NPR and the club length radius."
I was of the opinion the "SHOULD" you want changed to "MUST" only applies to determining NPR , not the "club length radius"

I see where this may be misinterpreted. The player can use whatever club he wishes to determine the club length radius, and yes, any club can be used to determine if it has rolled more than two club lengths. But, keep in mind that these two club lengths are measured from the point where the ball strikes the ground, not from the second tee placed at the end of the NPR club length.

[AAA]

The same club used to measure the 1 clublength radius from the npr must be used to measure the 2 clublength maximum roll. Dec 20/1