I bought the 3 axis package for my Bridgeport. Mary and I had a brief discussion about the length of the encoders and the DRO arrived in about a week. It was exactly what we had agreed upon. The encoders had glass scales and were easy to install, the gaps and parallelism of the mount were very forgiving making it easy to get up and running.

The readout has many features making things like bolt circles and hole patterns easy to program. The readouts are bright green and their intensity can be set from dim to very bright over 7 levels.

I am planning to buy the 2 axis version to replace the Heidenhien DRO I currently have on my lathe and if you are in the market for a DRO, I would recommend this product as it is a good value for the money.

I ordered longer lengths than needed. The scales are easily cut with a metal band saw (glass included!).

You won't get installation instructions which makes sense - who knows what machine you've got. The little red spacers are just that. Leave them in until everything is bolted down and then pull them out.

Took a day to install and they appear to work just perfectly.

As a self-proclaimed hobby machinist, I did a lot of research to determine A) what DRO system I wanted B) respective scale sizes that will fit my mill. This was my first DRO install which resulted in ~10 working hours, but trust the process & enjoy a couple cold ones and you'll be okay. Hopefully the pictures & information below will serve as an aid in making your DRO purchase/install.

SPECS USED - ENCO Model 100-1599 (49" x 9")
-Longitudinal Travel (X): 35" - 37" Scale
-Transverse Travel (Y): 12" - 14" Scale
-Vertical Travel (Z): 16" - 18" Scale

PROS:
-Overall good quality scales/encoders/box
-Numbers appear to accurate, but I will conduct further testing to verify
-Quick shipping & good packaging
-Great communication from seller

CONS:
-Hardware (socket cap screws, washer, brackets) is generic and could probably be disregarded
-Manual is quite poor, rely on YouTube as a better reference
-Shield covers are thin and don't allow for much room for mounting holes, but it's better than nothing

TIPS:
-Start with X, then Y, and finish with Z axis - Easiest -> Hardest
-Use a digital level to estimate positioning before dialing in with indicator
-Make sure you have plenty of hardware on hand! This includes nuts, bolts, taps, and various sized washers
-Slightly & carefully ream ends of mounted hole to accept 1/4-20 bots (common & cheap to acquire)
-I recommend custom brackets for Y & Z axis install, and baseplate for Z (depending on machine model)
-Wait till the end to perform cable management. Use oversized P-clamps where slack is needed (Y & Z)

After having the unit running for 5 months the display will no longer do the startup self check. Upon applying power to the unit, after 3-5 seconds part of the display will flash for less than a second without the start up beeps. Waiting on seller contact get options to fix or replace. Followed the trouble shooting guide (if you can call it that) in the back of the manual without any change. Work good... while it was working.

After a several weeks of waiting for components and testing, in the end the seller replaced the display. Just waiting for new display. +1 star for now.

Surprised at how fast this arrived. Ordered Monday received Saturday with xmas in between. Box arrived ok but hardware bags had split and screws were rattling around in the box. But overall I think packed quite well. No mounting instructions but not too hard to figure out. A dimensional drawing of scales would be nice. Mounted on a Bridgeport so brackets included were of no use to me. You will have to build a bracket or two for y and z just like on an exspensive setup. Fairly nice lightweight covers for the scales made of aluminum extrusion. WIll keep chips out but will get dinged if something hits them. Resolution can be set to either .0002 or 5 decimal places. Mounting arm for the DRO could be a bit longer. If you tighten the DRO brackets pretty good seems ok. So far I like the DRO features. Just like lots of imported stuff the grammer, syntax, and naming conventions in the DRO manual need work but not undechiperable. Unless you must have a name brand I can't see much wrong with the setup.