AES/newspost wrote:

Can one _define_ the "start" and the "end" of a runway to within several
inches? (seems to me paving or blacktop would roll off over several
inch range)

Absolutely. You start the measuring wheel at the edge of the threshold mark and
stop it at pavement end.

George Patterson
To a pilot, altitude is like money - it is possible that having too much
could prove embarassing, but having too little is always fatal.