Yes they are expensive, and rarely does an electrician have one. If I had one I would let you borrow it Hugh. As indicated My electric company had one. Maybe you can call your electric company? I hooked up with a very cool division of my electric company, here in NC, they put a recorder on the meter that measured THD, voltage fluctuation, among a few other things. They did this for a month. The area where my ground rods are driven was built up when I built my house. It had a big slope, so it was filled in with a substrate that was crushed up rock, NOT IDEAL. My intention is to auger a hole, typical Ground rods 5/8 by 8'. I will come off of the 2nd rod with 4awg at least 10-15' away. The rod is inserted in the hole and ground enhancement material is mixed up and poured around the rod. The two rods that are in the ground now were just driven in, by me! Not easy! I found out about the ground enhancement material after I installed the two new rods. Their are several companies that make this material, I'm using a product called GEM. I'm trying to convince the building inspector to allow me to have a 2nd meter on my house (its not going well). In that case I would have a completely separate line from the transformer, to a meter, to panel, and a separate independent grounding system. I'm not optimistic this will happen.