The answers to this question don't contain the (variable) assorted tolerance distances that are applied to all LEGO dimensions except for the peg spacing (which is the only measurement left out).
Has anyone made a diagram, or something similar to that article, with the actual, real world dimensions? I'm sure logical numbers might be interesting to some users, but others are looking for these dimensions for engineering purposes, so the logical numbers in the above article are useless to us.
There's loads of approximate answers incorrectly using the word "Exact" out there, so many that it's impossible to find the true exact answers. To be clear - it's impossible to have a height, width, or length that's an exact integer multiple of the peg spacing, because the lack of spacing would mean that bricks would fit too tightly (or not at all).
Does anyone verifiably know the actual size constants that are in use?
I've found assorted people making guesses (0.1mm spacing) and measuring their kits (reporting 19120mm for 200 bricks, or 0.04mm spacing), but I'm an engineer wanting to design something very large and complicated that needs to be LEGO-compatible, so I'm seeking the definitive mathematical answer, not a guess or measurement.
It appears that everything is measured in "Wall Units", which appears to be the one unit that is the least constant and is never as big as 1.6mm. As best I can tell, the thickness of these walls is what gets varied (by differing amounts) depending on what kind/size of object is being produced to derive the gaps necessary for working.