Ganker....
As you rightfully point out, after lining up on the runway it's too late to worry about a 60 foot difference, and it's more sensible to go (knowing that there is a bit of fudge built into the RTOW calculations, or that you built in some fat by producing a card with an intersection take off, or a conservative wind component).
But maybe...just maybe...the checker was trying to tell you that confirming the take off environmental conditions are valid is something you confirm long before you get to the runway....NOT on line up....at which point it is too late.
Maybe.....just maybe....he was trying to point out that you should have done something when the QNH started to drift towards the tolerance limit....and before you got to the runway.
We all goof up and make mistakes, we're human, but in this game it is important to distinguish between things that will not kill you (turning the frequency knob clockwise, flap or flaps) and things that will kill you, like invalid take off conditions in an RTOW calculation.
Last edited by raven11; 16th Jan 2014 at 23:17.