I am selling a SENCORE Model RC 167 component substitution box which allows in-circuit substitution of resistors and capacitors. It is vintage but in excellent condition. This is a very handy addition to a technician’s workstation. Unfortunately my days of repairing electronic equipment is over. I think the price that I am offering this very clean unit for should get it into the hands of someone who can make use of it. Please see the photos. Thanks for looking.