Measure pre-existing solid model?

Hi, as an absolute beginner at Rhino, I was wondering how to go about taking measurements from a solid model that someone else has built and sent?

Specifically, it’s a pipe-based form with multiple bends in it, and there are lines that have been drawn after modelling this, which have their endpoints positioned at the centrepoint of the pipe profile at various points along it. I was hoping to take measurements between the endpoints of these lines, (except between endpoints of different lines; not just measuring those already drawn).

Thank you for any help & hope that makes sense.

You might look at the Analyze menu, specifically Analyze>Distance…


Ok thank you, will check it out