I am on my third Touchmaster in six months. I had one that was completely out of square like .006 in about .200 across the face, the problem was that it wasn't a rotation issue but rather opposite sides were not parallel to each other. There was no way to correct. They acknowledged that others had the same problem. The next one had one side badly out of square and was drifting after a couple of months of use and would repeat within anywhere within 0 to.010. basically no repeatability at all. They sent me another one to replace it as the acknowledged plating problems on contacts. The third one was fairly square but after a few months doesn't repeat better than +- .005 in X. I am not moving the arm but rather just backing off and remeasuring several times. Z still repeats perfectly.
I just bought a brand new Omron unit and am offering the pretested and verified bad touchmaster for $50 over what the list price is. I figure it is worth more than the new price because you could buy a new one and risk the problems I have had or simply spend the extra and buy mine and not bother putting it in. Just put it on the shelf and never use it again like I will. You will in the end save money. PM me if interested.
