Answer: altimeters

AnswerCrossword Clue
ALTIMETERSCockpit gauges
ALTIMETERSSkydivers' devices
ALTIMETERSPlane instruments
ALTIMETERSCockpit dials
ALTIMETERSDevices that work by comparing air pressures
ALTIMETERSSkydivers' aids
altimetersAn instrument for determining altitude attained, esp. a barometric or radar device used in an aircraft
altimetersALTIMETER, a device for measuring altitude