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That would be horribly wrong, because the big-needle is the pressure differential pressure, and NOT the cabin altitude. The small one would be the cabin-altitude.  :(

I believe it is correct because the outer numbers go from 0 up to 10, with 10,000 feet cabin pressure being about as high as you would want to have it. The inner numbers go from 0 to 50 and the 707's service ceiling is about 41000 - 43000 feet (AFAIK). Probably higher.


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Do you still get the yellow warnings in the overhead-panel while climbing above 10'000ft?

I've never noticed, nor looked, lately. I'll check it out on my next flight.

Mark