This machine seems to have been designed to allow a wide variety of physical therapy treatments. There are lots of parts and optional ways to put it together.  There are lots of online references to it with regard to PT research.  However, we have not been able to find a valid/live website for it or the manufacturer.

   

It seems clear that was designed to interface to some electrical source and probably a computer but we did not get those parts (other than the cable) and have no information regarding what they look like are what they are.

MERAC by Universal Gym Equipment Inc.