Help to identify a tool set

[martin_nj]

Hi, guys. I found this set on an estate auction, it's marked "The Borg-Borman corp. waco tx" I could not find any info online about this company, it has different sizes "cylinders" that I assume slide inside a tube? some kind of cutter? and an electric motor, with a bunch of accessories in the original metal box.
Any information you can provide me would be greatly appreciated.
Thank you.

 

[Unmarked Bill]

What does it say on that paper?

 

[martin_nj]

Hi, It Says " This Threading unit has been inspected through all phases of its operation" but it does not look like a traditional threated machine?

 

[JiminAZ]

I am going to guess that it is some sort of boring or facing tool. The cylinders look like maybe there is a taper inside that allows you to anchor it inside of a bore, self centering. Then the motor drives some sort of cutter contraption off of the centered cylinder reference.

Or I could be out in left field.......