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George,
As an old school A&P can you tell me why the recip transports usually had a
BMEP guage which was given its (oil press) signal from the torque nose of
the (HamStandard) prop?  If it is true BMEP is a mathematical construct, and
it is, how and with what error was the Tq given as BMEP?  Is it just a
piston era relic?  Do modern turbine Tq guages have any intrinsic misleading
error?
Thanks,
Walter Dodson

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