Lathe offset tail stock uncenter.

[Toolmaker51]

Excellent Cap'n. I'll wager side flats are part of orienting the offset feature?
There have been commercial offset centers over the years, some were high priced, though never seemed to take hold. That always puzzled me.
Dedicated MT#2 is more than just a timesaver in setup and/or return to zero. Having consistency rules even higher.