Originally Posted by
212man
High to low, watch out below!
Expressions like that mean absolutely bugger all to some one who has no clue what it means.
Does it mean "If you descend from high to low you will maybe hit something?"
Is a student likely to imagine it refers to high to low pressure changes at the same level that if not corrected on the subscale will result in the altimeter progressively reading high causing the pilot to descend in order to maintain the altimeter reading?