I don't find this to be true, Andy. Altimeters need
to be re-set primarily when landing at a destination
1000's of miles away from the takeoff location. I find
my altimeter to be surprisingly accurate when landing
at my takeoff location after a 4 hour flight. This
is true with the SN10 altineter, also.
JJ


The issue is that the the altimeter setting is usually
unknown at the
time of landing but it is almost certainly different
for the altimeter
setting at takeoff time. The altmeter error on landing,
if still
using the takeoff altimeter setting, may exceed 100
feet even if there
is no significant weather change.

Andy