A couple more clues ….

It seems to have been templated off a standard RAF type panel like the one below but not modified from one since there are holes filled-in as well as created.

It is probably not Norwegian (Upp not Opp).

I can’t be sure of the markings on the ASI – does the needle go round twice or only once? Anyway the max speed will give an indication of what kind of aircraft it came off.