I've got a Clark CMD10 manual mill. The addition of a digital readout would make it manageable versus the pile of cheap junk it is. I've seen a great variation in digital readout units available. Some are just a simple version year with a zero button others are a full-blown screen of some sort that connects to 2 or three sensor scales and some even claim to allow you to do arcs and circles.

Any guidance greatly appreciated. Most are the ones I have seen sold in the UK where I live look exactly like the ones on eBay from China so I'm guessing I might as well just buy one on eBay from China and be able to spend the extra cash on extra features rather than buying the basic one for a markup from somebody like Warco.