Hugh not heroic, psychotic!! Deep rooted OCD! Lee, I tried my best with Multi Meter! Their is an Ohm section, on a MM if you touch one probe on the rod, where do you make contact with the other? I thought about touching the Rod and inserting the other probe deep into my ear canal!! Theoretically I could A/B. After installing the rod with the enhancement material and connect the 4 AWG, from the 2nd rod, I could remove it from the clamp and listen with and without connected to enhanced rod. I will do that after returning from the orthopedic surgeon!! When I reinstalled my new grounding system, (Ground Rods Have A Life Span) the old one as you can imagine very corroded and scaled after 20 plus years in the ground. It was still doing its thing for lightening , but my resistance was poor. The noise floor with my 6 dedicated circuits became lower. The system took on an improved delivery. Blacker, a stillness. As earlier indicated, you want to get as low as possible. But consistent is important too.