Reformer
The principle piece of equipment is called the Reformer and consists of a sliding platform anchored at one end of its frame with springs. The platform can be moved by either pulling on ropes or pushing off from a stationary bar. Thus, exercises include the challenge of moving the platform and maintaining balance on a moving surface (if sitting or standing).
Cadillac
Another Pilates machine is called the Cadillac and consists of a padded platform with a cage-like frame above it. From this frame various bars or straps are attached by springs.
Wunda Chair
A third piece of equipment, the Wunda Chair consists of a small bench-like platform with a bar attached with springs. Exercises are done by pushing on the bar while either sitting or standing on the bench, or standing or lying on the floor.