Jamie / anyone, a quick tip (no pun intended) that you may find useful.
This applies if like me you dont wear glasses.
My eye sight has always been excellent.
Of late though I can tell they have dropped off slightly - Years of staring at phone and long hours in front of a pc - modern living.
Anyway, when i first landed my Cadenza B I got to setting it up with usual care and attention.
Once I was happy, I had a look through my wife's £1/2 cheap off the shelf 0.75 reading glasses only to find it was pretty off
Setting up with them after gave amazing clarity of vision, made following arc and accuracy at grid point a breeze and gave me the best set-up ever.
I could clearly see the stylus tip and it's position on any given line and so on... I'll never set up again without them (hopefully next when the wheels fall off the Cadenza B )
Highly recommended cheap as chips aid for anyone who doesn't wear glasses, even if you think your eyes are good