Achtung!
Alles touristen und non-technishen looken peepers! Das machine is nicht
fur der fingerpoken und mittengrabben. Is easy schnappen der springen-
werk, blowenfusen und popencorken mit spitzen sparken. Das machine is
diggen by experten only. Is nicht fur gerwerken by das dummkopfen. Das
rubbernecken sightseeren keepen das cottenpiken hands in das pockets.
Relaxen und watchen das blinkenlights.
— I was suddenly reminded of this just now and had to Google for a version. I expect everybody has a memory such a sign: my first viewing was on a model railway I saw at an exhibition I went to with my Dad.
