Polar and Garmin both have options to set their watches to one of three settings: Automatic, Barometer, and Altimeter. ‘Barometer’ locks the watch in a mode where all changes in pressure will ...

A Washington Post analysis of FAA maps shows the proximity of the flight path to a helicopter “tunnel” at a midair crossroads ...

Braman said the Army’s 12th Battalion is part of one of 28 agencies who use the low-altitude helicopter ... turning a knob to set the altimeter to the current pressure broadcast by the airfield ...

Was a key altitude ... on air pressure readings. In the older Black Hawks, crews check that the barometric altimeter is working before each flight by manually turning a knob to set the altimeter ...