I don't see how not being able to easily spot imperfections from blurry fotos equate to not being able to see them "in person" as I "pick it up"
It was a trick question.
0.05mm is about a single layer of sprayed paint.
If it's a sudden step up or down, you can usually feel it more than see it, but over the course of even a few inches it becomes very difficult to spot if, not impossible. Why did I mention paint? Because painters use what are known as guide coats while block sanding to spot high and low spots using a single layer of paint, otherwise they wouldn't be able to spot such differences, especially in lighter colors/grays/raw metals (which is exactly why machinists use straight edge tools and feelers). Yes, sometimes you catch the light just right and spot it on a dark surface, but other times, especially those softer colors, it's impossible, in fact your fingers are more likely to find it than your eyes. This is why when a car builder has a "rough" car, they have it painted white, it hides everything, paint and body work for a deep black paint job can easily cost triple.
Anyhow, for those curious,
Note: This is not a dig at the Vortex or the case, it's just an example of how things are made, cheap and fast and to make a point. Very few people would notice or care about any of this, and even less are likely to take their case and start hand filing it to make sure all the surfaces line up correctly, In my case, was trying to make the top and bottom halves line up better, my top was slightly larger than the base, and while it looked to be by design, I wanted a flush surface.
In photo A the top edge on the keyboard is "perfectly" straight from the left side until about F10 where it drops 0.8mm towards the pause key before reaching the corner. In blasted/anodized form, it was impossible to spot, I was surprised when I found it, I figured the entire thing was milled, it wasn't. As I sanded, I found evidence that it was raw, blasted casting surface. It was only when sanding it with a straight edge that it revealed itself as not being straight.
Before:
After I squared it up, I got the whole thing pretty straight across the entire length, however the right side is still about .4mm shorter than the left. You can hold it up to light, you can look down the edges, doesn't matter, unless you have a micrometer or a very precise square, you can't see it. Blurry or not, it wouldn't show up.
Hopefully none of this threw the thread too far off course.
