altimeter vs measuring system

altimeter and measuring system both are nouns.

Word	Noun	Adjective	Verb	Adverb
altimeter	Yes	No	No	No
measuring system	Yes	No	No	No

As nouns, measuring system is a hypernym of altimeter; that is, measuring system is a word with a broader meaning than altimeter:

altimeter: an instrument that measures the height above ground; used in navigation
measuring system: instrument that shows the extent or amount or quantity or degree of something

Other hypernyms of altimeter include measuring device, measuring instrument.

altimeter (noun)	measuring system (noun)
an instrument that measures the height above ground; used in navigation	instrument that shows the extent or amount or quantity or degree of something