I have the free standing bigger brother machine which weighs several hundred Kg, also an auction purchase, over 30 years ago.

It has about 400mm table travel on all 3 axis and is a very robust machine indeed.

You will need very sharp engraving tips for fine work, and a relatively shallow depth of cut.

I use mine only occasionally, then for name tags and engraving divisions on dials using a rotary table for indexing and work holding. Very fiddly but does a great job.

Are they still making these? I would have expected CNC engravers to have taken over by now, with unlimited fonts and the ability to reverse and invert characters and numerals.