ALTIMETER
Altimeter
An altimeter or an altitude meter is an instrument used to measure the altitude of an object above a fixed level. The measurement of altitude is called altimetry, which is related to the term bathymetry, the measurement of depth underwater.The above text is a snippet from Wikipedia: Altimeter
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altimeter
Noun
The above text is a snippet from Wiktionary: altimeter
and as such is available under the Creative Commons Attribution/Share-Alike License.