Grc block for measuring sample rate?

A challenge that I am encountering recently when building flow graphs is
with upsampling and downsampling and getting the sample rate where I
need it. Sometimes I have rate mismatches and don’t know a good way to
take measurements with grc so I can troubleshoot. Is there a nifty way
to measure the sample rate between two blocks in grc?

Thanks!

[Brad H.]