We still don't know what he wants to measure so suggesting tools seems premature.
Or why he wants to measure.
Knowing what you want to do first is key. THEN you search for the tools to do the job.
For example, maybe a distance measuring tool would be the best tool for the job (to guess at delay times)
For example, I use a couple of software based "measurement platforms" and some hardware based ones.
It all comes down to "What am I hear to do?". Then I look for the best tool that I have for THAT particular situation.
A different situation would require a different tool, or maybe a different tool would be better.
One size does not fit all.