lever scale vs beam scale

lever scale and beam scale both are nouns.

Word	Noun	Adjective	Verb	Adverb
lever scale	Yes	No	No	No
beam scale	Yes	No	No	No

As nouns, lever scale and beam scale are synonyms defined as:

lever scale and beam scale: a portable balance consisting of a pivoted bar with arms of unequal length

Other synonyms of lever scale include steelyard.

lever scale (noun)	beam scale (noun)
a portable balance consisting of a pivoted bar with arms of unequal length	a portable balance consisting of a pivoted bar with arms of unequal length