I searched for Marathon Electric, and found this:Clausing Floor Standing Drill Press Model 1630. It looks like your might be a little older, but the price was right! For an owners manual, try mikestools.com, I've found several manuals for older tools there. Interestingly, Delta-Rockwell, and several other 'Box Store' brands are the same tools with slight variations. I have 3 scroll saws that are identical except for the name cast in the strongarms.