First, shall I assume the dial is graduated for .200" on diameter for one turn?
I'd go with the 5/8"-10 ACME. Is it a left hand or right hand thread? I have made a 1/2"-10 ACME for a friend's Atlas, and another's cross-slide screw of 5/8"-10 ACME, both left hand threads so I have the inserts for it and some nice 5/8" TGP (turned, ground & polished) 1045. I also have a threading tool for the 5/8"10 ACME internal thread, and a tap for the 1/2" version.
I believe you have a DRO for the machine, so the dial accuracy isn't critical, right?
P.S. - Yes I did see the link and ordered two of them, just in case I lose one in shipping. For $0.66 each, it won't break the bank and shipping will be quite a bit more.
I'd go with the 5/8"-10 ACME. Is it a left hand or right hand thread? I have made a 1/2"-10 ACME for a friend's Atlas, and another's cross-slide screw of 5/8"-10 ACME, both left hand threads so I have the inserts for it and some nice 5/8" TGP (turned, ground & polished) 1045. I also have a threading tool for the 5/8"10 ACME internal thread, and a tap for the 1/2" version.
I believe you have a DRO for the machine, so the dial accuracy isn't critical, right?
P.S. - Yes I did see the link and ordered two of them, just in case I lose one in shipping. For $0.66 each, it won't break the bank and shipping will be quite a bit more.