I will flog myself for making such an absurd suggestion…..

Seriously though, are the rotor tach photos from the same aircraft as the others? That mag compass is straight out of a piper warrior/arrow/etc, though I’m sure something else uses them as well. My guess is that the fuel gauge came from a fixed wing aircraft, and a light one at that.

Thanks for your help so far guys! I understand the instruments come from various types of aircraft, but were used by the airforce from various African countries.

I will post a few more!