Well, this has been in progress forever, but I finished installing a Jenix DRO on the quill of my Millrite MVI vertical mill (resembles a Bridgeport, but about
2/3 the size) today. I now have X, Y, and Z axes covered.What a help a DRO is, especially with older machines with wear.
Now, only the knee lacks a scale. I have the necessary scale, but don't know when I'll get around to installing it. The quill was far more important, and the knee is the most difficult case - odd shape, nothing flat or perpendicular.
The big issue with putting a DRO on the Millrite (made in June 1965) is that it was never designed for any such thing, so usually there is no convenient machined surface to use.
Having a lathe helped a lot, allowing lots of custom little adapters and spacers to be made.
I'll take some pictures and post them to the dropbox when I have some time.
Joe Gwinn