WHAT?S PHOTOGRAPHED IS WHAT IS PROMISED This unit was purchased at a local University surplus auction. Was sold as the ? STEREOTAXIC LOT ? however it did not come with paperwork I DO NOT see ANY engraving of the manufacture Only someone who truly knows about these units (I do not)will be able to tell what this truly is. no prior history to this unit. This unit displayed signs of use and may display some or all of the following surface ? scratches, scuffs,markings, darker markings, signs dust, tape residue and possible rust etc. I took the best photos possible for the new buyer to see them Actual pictures fast and free shipping I myself have no way to test so I will be listing as parts of repair as is final sale Free shipping thank you so much for your time and have a wonderful day