Need engineering advice.

I have a shaped piece of sheet metal that's hooked up to a measuring machine. Four points of the sheet metal need to be flush against a skew surface to be scanned. Right now 3 sides are flush and 1 is bent up.

I can apply up to 21.8 N of force to flatten it and take the measurement, but I don't have any tool that does that. The surface is 5 feet up and can't be moved, and the point under the bent-up metal is a solid surface that's already been measured.

Is there a tool that can apply that pressure and attach to the solid surface in some way? I could build a spring assembly and patent it if there isn't.