When I took apart the table for my Bridgeport mill to clean out 30 years of crud, I had to remove the DRO's scale and inadvertantly pulled the sender / reader apart. The reader had a springy wire with a ball on it that held the electronics etc that actually read the glass scale. It was easy enough to put that back together and nothing appeared to be broken.
When I reassemble the reader and scale, what do I do to position the sender correctly with regard to the scale? Do I just get it close enough to read or should it ride on the glass scale? Should it touch the glass at all? The "adjustments" are pretty crude, so I'm guessing the little flat square reader should ride on the glass, but with the price of these things, it's better to wait and ask first. Should I clean the scale and sender while I have it apart? What to clean it with - Windex? Alcohol?
RWL