It's working; measurement question

I’m almost confused.. When I first started dabbling in PEing, I measured just a hair under 6” BPEL.. And after about 2 months of serious PEing, I’m at 6 1/2” BPEL, which I’m very happy about. But I wonder if I’m just measuring incorrectly or inconsistently. Is there a precise and scientific standard method for measuring? I just want to make sure my mind isn’t playing tricks on me :D (I’m still in the “Holy shit! It’s working!”-stage)

Well, the standard way is to put the ruler againt your fat pad, the ruler resting on the top of your unit, bone press it and read. That is the most precise way to know if you’re doing progress. You just need to always do this way and then you’ll know if you are progressing.

Nice gains btw.