If you're referring to this thread
MARSH Club PAR Meter Discussion Thread then you would need to be supporting member to view/post as that is in the supporting members area of the board.
That threads purpose is to get on the wait list for one of the clubs par meters and ask questions related to that. Since that is a supporting member perk that is the reason for it being in the supporting members area of the board.
But if you wish to start a thread discussing par meters in general then please feel free.