I mounted the scale on the base drilling and tapping a hole for each end (the only new holes made for the Y axis). Wedge shaped spacers make the scale vertical. A length of aluminium angle replaces the thin metal strip which fixes the Y axis bellows in place. One of the supplied agle plates carried the reader below the the scale.

Roger, Paul, I have added a 4 axis DRO to my SX2.7. Photos in my Album titled DRO. May not be the best way to accomplish the installation but it works for me. I've bought some Aluminium to tidy it up but not got around to it yet. Hope the pictures help.

Dave

I was planning to post some pictures when done (if it’s a good enough job) as there are not many resources online about fitting this type of DRO.

I do have quite a bit of aluminium stock in the garage so will hopefully have something useable.

I am hoping to have some time tomorrow to finish the X axis and start the Y axis.

Paul

If it's of any help at all, fitting the Y scale to a Warco might have presented similar problems – draught on the base casting, lack of parallelism of casting sides to table axis, no machined reference surfaces etc..

Having spent a couple of fruitless hours offering things up and taking them down again, I finally used assorted M4 grub scews to make the brackets adjustable (see sketch below) – it allows one to set everything up perpendicular / parallel with straightedge, square and clock, and once the foundations are 'square' and solid then hanging the scale and head off them in the correct relationship can be done using standard 90 angles and flat stock..