As I said, the pic doesn't scan very well as the sharpness isn't there in the original shot. However, I'm still convinced that the word above the centre of the gauge reads boost. I agree there is no minus but there is no other word I know of or can think of that starts in BO and ends in ST. The gauge reads from 10 to 60 btw.. whether that matters or not
The source of this shot is AIRSPEED.. The company and its aeroplanes by D H Middleton.
I can't see what the centre panel top RH guages read but they look like they're calibrated from 0 to 900. The two below are just too dark to read but they may read from zero to 300.
I have ordered a copy of that cd from NZ but have yet to receive a reply :think: I'd have thought there would have been a diagram of the main panel in the FM :think:
ATB
DaveB :tab: