Pro¹ X Engraving Requirements (size and visibility)

[Franz 2]

Hello all,

I did not find an answer in the forum so I start a new topic.
I'm one of the backers of the indiegogo campaign and got the email about the engraving requirements.
however while I was working on the svg I actually got some question.

1) How big (dimension) is are actually the engraving space?
2) Hand how big is actually the laser. Or lets phrase this differently. How thick is actually good visible?

I add some image. Its still WIP but I think it gives context why I' m asking this questions. Right now I eyeballed the size.
Hope somebody can help.

THX