George, its a Gantry Mill, the parts sit almost right on the floor and the gantry runs on two long side rails which are bolted into the floor. Attached is a picture showing a similar type of machine. This particular unit is from Scaled in So-cal. Mine is smaller than this unit, but then I didn't have the budget that they do :-)

I'll have pictures/vid's up on my website, which should be in about a month.

Jarrett

North American (later Rockwell) had three giant mills, over 100 feet long. One operator rode in an air conditioned armored cab right beside the tooling with windshield wipers. The cab could run out and back independent of the tooling heads. There were three tooling heads running at once. I miss Rockwell's surplus sales yard.

 

Lynn E. Hanover