Nice system. The Nottingham Analogue Paragon parallel tracker is actually called "Paragon 3". I've got three of them :-)
There are also two smaller siblings surprisingly called "Paragon 1" and "Paragon 2". I have a Paragon 1, as well. I've never seen a Paragon 2, so I wonder if it ever managed to get past the pre-production/prototype phase.
Best regards,
Klaus, Copenhagen Area, Denmark