1013 or 2992?
Hi there.
When setting STD on an analogue altimeter which has both HPa and In as the sub scale, which gives a more accurate FL readout, 1013 in the HPa window or 2992 in the In window? I have noted that 1013 and 2992 don't exactly match up in the sub scale windows. I have a feeling that this maybe because STD is exactly 1013.25HPa, and possibly that is why the two never sit perfectly in line in the sub scale window.
A bit pedantic I know, but its been bugging me for a while lately as I do those RVSM checks!!
Thanks.