Boring Cylinders

Where I live in Iowa, we once had quite a machine tool and manufacturing industry.  I was attending our local "Threshers Reunion" last week and the grounds where the event is held has a variety of early machine tools.  It's very interesting.  Pictured above is the first example of a Boring Mill.  Yes, it's original.  I was quite amazed by this thing . . .  and didn't even know it was about 7 miles from my house.