I have the readings on my block for ever hole we honed. LOLThere's a lot of info to be looked at with a Profilometer, whenever we run into a surface quality concern there's 4 or 5 readings that are taken into consideration besides just straight RA. Don't ask me which ones, I'm not the QA guy
First time I saw the price tag on the Mititoyo Surftest I understood why the QA guy didn't let us play with it
There is a few settings like 4 or 5. It's measuring the peaks, the valley's, the relative flatness. It's pretty intense.