IBM Rotary Motion Probe PN 04G5944 For Use With Personal Science Laboratory 7694.  Sold as pictured.  Please view photos.  Please see the cord is cut on this and will need to be replaced before final use.  Sold for parts or repair.   

I purchased a lot of university surplus parts. 

Tag: C-P9294 

Lab: 21H-AKR

Shelf: .7