Numbers are elusive
No problem; was only a doodling exercise.
Seems more sensible both on the required "h" values to describe JoeC's results and scaling to your values.
From imprint image it appears to be 14x10mm
http://www.jr001b4751.pwp.blueyonder.../Phaestus3.jpg

Good work on Joe's part and I understand the desire for repeatable, measurable mounting parameters... :)

But - if all waterblocks are tested under ideal mounting conditions to obtain accurate C/W data, isn't this creating a false sense of comparison since in real world applications Joe Customer will probably rely on the hardware supplied with the block (bolts, clip, springs, ???) most of which will produce less than ideal mounting pressures.

If the goal of testing is to repeatably measure a waterblocks C/W then fine. But that data is then used to compare one block against another - still good info under ideal mounting conditions. But at the end of the day it doesn't necessarily provide a good indicator of how one block will perform vs. another under real world mounting conditions. Block A may have good heat transfer abilities and a poor mounting arrangement while block B has an excellent mount but poor C/W. So which is better for the end user???

quite separate issues
why combine their effects ?
how do you tell one from the other ?
a mounting system can be improved/modified, the wb is as it is

lapping is a quite similar issue
test 'out of the box', or after lapping to do what the mfgr could not be bothered to do ?
(if in fact one actually is capable of making an improvement, sometimes yes - other times no)

most here are interested in the wbs' performance capability and to measure that one needs a repeatable mounting system

providing truly accurate info for newbies (no offense meant) is not possible as one would have to apply too much and too little grease, tighten unevenly, apply all combinations of bending moments from the hoses, etc. etc.

just view wb tests as describing the wb's best possible performance - always relative to that specific test bench