If yes, my altimeter reading should tell me the correct elevation If I land at another airport assuming the QNH has not changed.
I think the key concept here is that a QNH is not just specific to a 2D location but also to a level in that 2D location. Thus the QNH at a heliport at 8050 ft perched on stilts above the one at 3600 ft will
not be 1032 hPa (unless the temperature profile happens to be ISA).