An altimeter is a mechanical device that uses barometric pressure to display altitude on a calibrated scale. Most use a sealed drum with a geared hand. Because barometric pressure can change over time, an altimeter must be set at a known altitude before being used and must be re-set daily. Altimeters have a maximum altitude specification varying from 4,000 to over 30,000 meters.
- Oris Big Crown ProPilot Altimeter (2014) - 15,000 ft
- Favre Leuba Bivouac 9000 (2018) - 9,000 m
- Citizen Promaster Altichron (2018) - 32,000 ft
- Bremont U-22 (2015) - 100,000 ft