range pole vs ranging pole

range pole and ranging pole both are nouns.

Word	Noun	Adjective	Verb	Adverb
range pole	Yes	No	No	No
ranging pole	Yes	No	No	No

As nouns, range pole and ranging pole are synonyms defined as:

range pole and ranging pole: surveying instrument consisting of a straight rod painted in bands of alternate red and white each one foot wide; used for sightings by surveyors

Other synonyms of range pole include flagpole.

range pole (noun)	ranging pole (noun)
surveying instrument consisting of a straight rod painted in bands of alternate red and white each one foot wide; used for sightings by surveyors	surveying instrument consisting of a straight rod painted in bands of alternate red and white each one foot wide; used for sightings by surveyors