caliper vs measuring device

caliper and measuring device both are nouns.

Word	Noun	Adjective	Verb	Adverb
caliper	Yes	No	Yes	No
measuring device	Yes	No	No	No

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

caliper: an instrument for measuring the distance between two points
measuring device: instrument that shows the extent or amount or quantity or degree of something

Other hypernyms of caliper include measuring instrument, measuring system.

caliper (noun)	measuring device (noun)
an instrument for measuring the distance between two points	instrument that shows the extent or amount or quantity or degree of something

caliper (verb)	measuring device (verb)
measure the diameter of something with calipers