Single Stage Press

From GunCounter

A tool for reloading fired cases to be used as ammunition

As the name implies, the press performs one operation on one case at a time.

Reloading operations (for metallic casesDepriming/resizing, priming, powder charging, bullet seating, crimping) are performed one at a time on sequential cases. The die is then changed and the next operation in the process is completed on each of the cases.

This is basically batch processing.

Check out this link for discussion of different types of presses, with pictures