High End cartridges and the built quality

The magnification used to make the measurement and take the photo does not affect the extent that the diamonds are not "plumb and square". The only thing the microscopy does is allow the user to see and measure the degree (pun intended) to which the stylus is "out of spec". With respect to a line contact or micro-ridge or other exotic stylus shapes, where the contact patch is so small, a 4 or 5 degree error is, IMO, substantial.

Thank you Cantgetnosat for the information about Melm!
I understood it wrong.

Hi Whatthe,

i had problems with the Kleos, because it tracks only 40-50my lateral and playing loud sibilants.

So my dealer send it in the warranty time to Japan and after it tracks about 70-80my. Certainly the compliance was to high for my 12" Reed 3P.

At this time i got a Skala from a friend and looked it under the microscope, because he had problems with it. After i saw the crooked diamond i had a look at my Kleos and was horrified.

I wrote an email to my dealer and Lyra Japan, but got no answer of both.

The problem is that the diamond is glued askew on the small plate you can see here
https://www.dropbox.com/s/skw82l9yohw3pna/VTA%20Kleos.jpg?dl=0
Apparently Lyra does not look at the diamond when building it.

Now i have a perfect built EMT JSD 6. All is perfectly aligned.

I think every manufacturer of those highend cartridges has to make a measurement report for it like EMT.

I do not want to make Lyra bad. The have very well produced cartridges. See here
https://www.dropbox.com/s/xjefbfzre777ub7/Azimut%20Reed%20Kleos.jpg?dl=0

https://www.dropbox.com/s/a60aalpzajtyd4b/Delos%20Azimut.jpg?dl=0

Thanks for the info 99, it is disturbing to me. To Markpao and Whatthe's point, how much do we really know about anything unless it is magnified? And how much do we want to know? I now feel like I have been lucky with my 2 cartridges since both play with no "known or detected errors."

I know cart are built by hand by craftsmen and as such there has to be a margin of error. But once complete how does he/she inspect and determine that it is ready for consumer use and enjoyment?

I am in the market for a cart and it is already a daunting decision because of the numerous options, things like this give me great pause....

To the cartridge designers and builders I say "Come On Man!"