Originally Posted by
Spooky 2
I'm intrigued by the four instruments on the leading edge of the upper FE panel? Suspect they are either N1 or N2 gauges, maybe EPR that would be in the vsision scan of the FE when facing forward? Were these a BOAC mod, or was the airplane delivered this way as I have never seen that config before.
Speeky 2: I think they were fuel temperature gauges - if I remember correctly one had to "toggle " the fuel temperatures manually especially when changing fuel tanks because of the differing fuel temps in the tanks.