A Copernican View of the Turntable System

I do however maintain, that absolute level of platter and tonearms is pretty important.

Analog reproduction (or better, superior analog reproduction) is based on precision. And knowledge what-is-responsible-for-what. Our times are modern, "something" is offered and when there is a good review about it, that's the absolution, no matter how mediocre it is in reality.
Marketing replaced brain and Analog is unfortunately THE example par excellence for it.
The real problem today - imo - is, that a customer has to rethink the design, to control some parameters... it isn't his task. He pays some money and relies that he gets something serious. Level Armboards, round platters... do not need NASA science, but it is the profit that counts today. Not for every manufacturer, some try to do a real good job (and they do) but would you accept a car which drifts always a little bit to the left side, and the manufacturer/dealer will tell you "Hey. come one, thousands of happy customers and you are the only one who is so picky...lower tire pressure on the right side"

I do however maintain, that absolute level of platter and tonearms is pretty important.

Done right ?

You see, right side ----> Timeline Strobe.... :-)

Syntax, I presume that digital level also reads 0.0, 0.0 while it rests on the platter.

I would like to know a way to measure how truly vertical the arm shaft is. Any variation in this would be pretty bad for the stylus as it moves along an LP. A uni pivot bearing would not be as problematic as a gimbal arm.

Thanks for that photo of the Micro armboard Syntax.
For many years I have been sceptical of the Micro Seiki method of attaching their cantilevered armboards like this as it relies purely on a friction fixing which structurally is not the best method for a cantilever.
Now however I understand that by doing it this way.......one is able to adjust the absolute 'level' of each armboard which is not possible with a fixing method like that used for the Ravens

This once again reinforces how much expertise and knowledge has been lost since the golden days of dedicated analogue companies?

Halcro -
The easy way for you to fix the issue is to get 3 holes cut and threaded for machine screws ( grub style ) around the outside of the centre bolt in the arm board as wide as possible ( maybe just inside the edge of the tower.
Get some machine grub screws and get your engineer to put a fine radius tip on each.
That way you can level the armboard with the 3 tiptoes and just use the centre bolt to lock it down. You could go to a nylon centre bolt to get a 3 point mechanical diode if you like.
You can also check if the vertical bearings are parallel to the platter and adjust if necessary for errors in the arm with this system.