CPlane in Viewport

Hi
Im struggling to align my model in the view port. My object in model space has detail that is not aligned with the world origin, so in detail viewport i want it to be aligned so i can add measurements etc.
I have tried making new cplanes in the detail viewport but when i choose set view after the cplane reverts to world origin, ive tried lots of different ways but i cant seem to get it to work.

Dont worry, i think ive got it. Set view to Plan after changing CPlane, i was choosing Front view etc and it was over riding the CPlane.