Welcome!
Restoring a Field camera will be a most satisfying activity.
A lathe will make such work so much easier and better. You will be able to make new parts, and literally, nuts and bolts, if you so wish. And making a few Accessories will not only make the machine more versatile, but provide useful experience and a few tools that make life so much easier in the future.
Finding and joining a local M E club will be so much help in gaining experience and confidence.
With a lathe, all manner of things become possible.
Howard