I have a Newall DRO for my Rockwell 11 and I am looking at one for my Jet BD1325R, I think that they are one of the most robust systems on the market. I installed one on a Jet mill drill at work, once I figured it out, it was easy to install and exceptionally accurate. I don't think that most hobbyists need a production quality DRO, but I really like how easy they are to install. Tim