What should I set on the subscale of my altimeter so that the instrument would indicate its elevation if my aircraft were on the ground at your station?
Answer
If you set the subscale of your altimeter to read ... millibars, the instrument would indicate its elevation if your aircraft were on the ground at my station at ... hours.
Note.- When the setting is given in hundredths of inch the AbbreviationINS is used to identify the units.