I am attempting to measure our press brake tooling to verify the alignment (see attached image)

I have attempted the following thus far to measure top tool centerline:
- Defined a plane on both sides of the slanted face and calculated the intersection which was not very accurate.
- Used free form scan and tried to use the point cloud to find center which was not very accurate either.
I am very new to Romer and pc-dmis so any help would be greatly appreciated.
Regards