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• Aircraft device
• Change around tempo for instrument in a cabin (9)
• Cockpit gauge
• Height-measuring device
• Highness guide
• Instrument for measuring the applause on Tool Time?
• Instrument that's taken up
• It takes measurements on a plane
• It tells you how high you are
• It works by comparing air pressures
• Mountain climber's gadget
• Navigation aid
• Parachutist's device
• Servopneumatic instrument
• An instrument that measures the height above ground
• Used in navigation