Hi Pete, I think this is the Piller Tool what Bob has referred too. Some years ago, I revamped my fathers Bonds Maximus drill, which stands about 500mm high an has a 100mm round table, but it doesn't swivel like the one show in Steve's drawing but is a similar design.

You can see it in the background in the photo below, where it was driven by his line shafting.

I have a different one that wasn't originally a sensitive one, but I converted it to a sensitive balanced one for drilling and tapping.

I bought it at a Steam Engine Rally many years ago, which is shown in the next photo as it was then.

This conversion was done with virtually used materials, the motor came from an old electric typewriter. This drill stands about 560mm high and has a 110mm round table and is a fair bit heavier than the Bonds one.
Regards Nick.
Edited By Nicholas Farr on 06/04/2020 13:42:57