tachometer vs measuring system

tachometer and measuring system both are nouns.

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

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

tachometer: measuring instrument for indicating speed of rotation
measuring system: instrument that shows the extent or amount or quantity or degree of something

Other hypernyms of tachometer include measuring device, measuring instrument.

tachometer (noun)	measuring system (noun)
measuring instrument for indicating speed of rotation	instrument that shows the extent or amount or quantity or degree of something