Lathe spider alternative

[mr_modify1]

It's quick and works well.

[BuffaloJohn]

Those are called lathe centering tools, lathe truing tools, lathe roller truing tools, or bump rollers.

They can also be used for burnishing.

[RetiredFAE]

A parallel or adjustable parallel placed behind it before tightening the chuck jaws, will position it evenly in the chuck jaws , then remove the parallel before starting the lathe of course.