Altimeter
part · 1928 · Electric age
A barometric height instrument (Kollsman).
Principles and materials it uses
- Pressure — uses. Pressure falls with altitude.
- Brass — is made of. The barometric mechanism is brass.
Where it is used
- Cockpit — is part of. An altimeter.
History: what it evolved from and what it influenced
- Barometer — evolved from. An altimeter is a barometer with an altitude scale.