"The Backgage" by National Hardware INC

So within the past week I have been fortunate enough to come upon a couple amazing tool finds. The first which is what the whole forum is about, is an older Dewalt Radial Arm saw (10”) (I’ll check the model number later since its truly redundant to my post.) The table on it is shot, so I know for sure I am going to replace it with a melamine top but where I am struggling is what I should do for the fence. My father has an older Craftsman RAS and has “The Backgage” by National Hardware inc fence on it. The only problem is you cant make angled cuts with it, but adjusting the ruler is a breeze(just in case your fence gets bumped out of perfect alignment.) I know I can build a fence put, a dual t track on top and have a ruler as well as a stop block on it, but I have grown quite fond of the backgage and if possible would like to find one. Does anyone out there know, whether they still are available for sale, whether they still make it or not, and if they by chance do or don’t make it, where can I find one? Thanks for your help guys.
PS I have googled this and the best thing I can find is an old popular mechanics article 1990 to be exact about the backgage, here is the link(in case you have never heard of, or seen a backgage fence)

http://books.google.com/books?id=f6nAZ0VHIQgC&pg=PA15&lpg=PA15&dq=the+backgage+national+hardware&source=bl&ots=2BnsYsHMvK&sig=pAOCyWnarHDF9CaeRB51kcwyGBg&hl=en&sa=X&ei=9X56T-fVBce-2gWGsPiQAw&ved=0CCsQ6AEwAA#v=onepage&q=the%20backgage%20national%20hardware&f=false

-- Curtis, Texas Woodworker and wood lover.