Originally Posted by
dook
I think this instrument might be from a British experimental aeroplane and wonder if the two images are not connected.
I'm not sure which two images you're referring to - the two in the original post are clearly the same unit.
As it's definitely from a sim it's more likely to be one for a production type rather than an experimental aircraft. Could be an F-4 sim rather than a Lightning one, I suppose.
Either way, the single, electrical connector on the back is a giveaway that it's not displaying genuine M:
