Question about terminology

From:         geospe@mcs.com
Organization: MCSNet Internet Services
Date:         25 Jan 96 00:55:06 
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Last week I was in Avionics training for the MD-11. We were discussing
altimeter settings when the question arose regarding the meaning of
the abbreviations QNH, QFE, etc.

We were able to figure out all the letters but the Q. I suspect that
it has to do with pressure, but I have no authoritative source to
verify this.

Please tell me if I am on the right track, and a recommendation of a
good available reference source would also be very appreciated.

Thank you.

geospe@mcs.com