Hi Bruce, grumpy and Rob,
Bruce, your quite correct there mate, I bought this alignment tool a couple of years ago on the advice of my local greenskeeper, to enable me to set-up my Scotty correctly.
It's made of 1/2" square hard chromed steel, 18 1/2" long, and has a cup head screw that is screwed into a tapped hole with a locking nut on the underside. The screw is located in an offset position being exactly 8 1/2" from the left-hand end.

As Bruce has said, you place the rod on the front and rear rollers, and adjust the screw so the underside lip sits on the topside edge of the bedknife blade. You then slide it across the bedknife from one side to the other to see if the alignment is correct.

[Linked Image from i266.photobucket.com]
[Linked Image from i266.photobucket.com]
Hoping this is of help. wink
cheers2

Please do not PM me asking for support. Please post your questions in the appropriate forums, as the replies it may receive may help all members, not just the individual member.
Kindest Regards, Darryl grin