I am an engineer and have Mitutoyu and cheap Aldi items, they are both the same in performance and measure equally as accurately, the only downside is the Aldi ones are slightly rough in operation and need their locking screw fettling slightly.
Moisture? not a probles that I have found and I have used my Aldi ones outside in the rain on numerous occasions without issues.
Modelling work? Aldi ones every time as they are cheap enough to damage and replace and as accurate as Mitutoyu.