variometer vs measuring system

variometer and measuring system both are nouns.

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

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

variometer: a measuring instrument for measuring variations in a magnetic field
measuring system: instrument that shows the extent or amount or quantity or degree of something

Other hypernyms of variometer include measuring device, measuring instrument.

variometer (noun)	measuring system (noun)
a measuring instrument for measuring variations in a magnetic field	instrument that shows the extent or amount or quantity or degree of something