1. instruments that measure altitude or height above sea level or ground level
Usage: aviation; mountaineering

Examples

• The pilot checked both altimeters before takeoff.
• Modern aircraft are equipped with digital altimeters for precise readings.
• Mountain climbers rely on altimeters to track their elevation gain.
• The altimeters showed they had reached 15,000 feet.
• Barometric altimeters measure air pressure to determine altitude.
• GPS altimeters provide accurate elevation data for hikers.
• The flight instructor taught students how to calibrate their altimeters.