http://www.eastwood.com/15in-adjusta...ile-gauge.html
Here it is, this way you can mark off sections from front to rear on both sides and
check the profile at those increments, say at .5 to 1 inch increments, you will have to make a whole bunch of card board cut outs and make them fit good to accomplish that. If you put value on your time as I do then this is the ticket. I'm gona get one of these.
And just think of all the other places you can use it too.