I have sat for many hours on a boring machine. My mind is never idle during those times, so I developed a depth stop for my two most used machines. Does this one have a depth stop? One of the other developments I ponder is a machine run off peddles so your legs do the work, it has become rather bulky, and not easily transported. The interesting item on your machine is the moveable head/base. I have thought of a cog that digs into the timber face and advances the machine to the next hole. This newly discovered machine solves that issue.

With a 1:1.5 ratio you may want to find a very fine threaded 2" bit and I now use a modern 1-1/2" bit instead of the older bits. They cut a nice clean hole and they have a coarse feed screw. You can always extent out the arms.

I am curious about its use or admiration, same as Will. Not to put you on the spot but what was the cost of this rig. A ball park figure will suffice.

Tim