Sorry if this has been answered before, but I'm in the market for a 2 axis DRO for my X3. I've been looking at the MTech units on Ebay. Any red lights with the MTech products or the mtechdrostore seller on Ebay. Also, my XY travel is 16" x 5 5/8". What size scales should I get? (What is the actual scale travel vs. scale physical length?) I'm new to the DRO game. I've used one on a large Bridgeport mill and really liked it, so I thought I would add one to my X3. Any other advice or opinions on DROs. I don't want to spend more than about $600 and don't want a 3 axis.
Oh, one more thing: will a DRO with glass scales interfere with the table power feed unit? Thanks.