dip circle vs inclinometer

dip circle and inclinometer both are nouns.

Word	Noun	Adjective	Verb	Adverb
dip circle	Yes	No	No	No
inclinometer	Yes	No	No	No

As nouns, dip circle and inclinometer are synonyms defined as:

dip circle and inclinometer: a measuring instrument for measuring the angle of magnetic dip (as from an airplane)

dip circle (noun)	inclinometer (noun)
a measuring instrument for measuring the angle of magnetic dip (as from an airplane)	a measuring instrument for measuring the angle of magnetic dip (as from an airplane)
	an instrument showing the angle that an aircraft makes with the horizon
	an instrument used by surveyors in order to measure an angle of inclination or elevation